On which does Kinetic Energy depend?

On which does Kinetic Energy depend?
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– Both mass and velocity of the moving body
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A car and lorry are both moving with equal kinetic energy. If equal breaking force is applied on both, then before coming to rest the (a) Car will cover a greater distance (b) Lorry will cover a greater distance (c) Both will cover the same distance (d) The distance covered by them will depend only on their respective velocities

Description : A car and lorry are both moving with equal kinetic energy. If equal breaking force is applied on both, then before coming to rest the (a) Car will cover a greater distance (b) Lorry ... will cover the same distance (d) The distance covered by them will depend only on their respective velocities

Last Answer : Ans:(c)

Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat? -Physics

Description : Can momentum be hidden to human eyes like how kinetic energy can be hidden as heat? -Physics

Last Answer : Yes and no. In a regular mechanical system with macroscopic parts, momentum can not be "hidden" to human eyes. But in other systems, momentum can be hidden. For instance, in an electromagnetic system, ... it is really only hidden to human eyes. We can detect radio waves just fine with an antenna.

Two objects A and B are moving with same momentum. Mass of object 'B' is greater then mass of object 'A'. Which of the two object will have higher kinetic energy? -Physics

Description : Two objects A and B are moving with same momentum. Mass of object 'B' is greater then mass of object 'A'. Which of the two object will have higher kinetic energy? -Physics

Last Answer : Let m1​ and m2​ be the masses of the body Let m1​>m2​Given that m1​v1​=m2​v2​v2​v1​​=m1​m2​​∴ Ratio between their kinetic energies , =K2​K1​​=21​m2​v22​21​m1​v12​​⟹K2​K1​​=m2​m1​​×m12​

A body is moving with velocity 4 m/s , possesses 56 Joules of Kinetic Energy. The momentum of body will be equal to -Physics

Description : A body is moving with velocity 4 m/s , possesses 56 Joules of Kinetic Energy. The momentum of body will be equal to -Physics

Last Answer : (d) 28 kgms-1

If speed of a car becomes 4 times, its kinetic energy becomes -Physics

Description : If speed of a car becomes 4 times, its kinetic energy becomes -Physics

Last Answer : (c) 16 times

What is the sum of the kinetic energy and potential energy of the molecules of matter called energy ?

Description : What is the sum of the kinetic energy and potential energy of the molecules of matter called energy ?

Last Answer : The sum of the kinetic and potential energy of the molecules of matter is called internal energy.

During the motion of a projectile fired from the earth surface, ______. (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant

Description : During the motion of a projectile fired from the earth surface, ______. (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant

Last Answer : (4) horizontal component of its velocity remains constant Explanation: The motion of a projectile is a two-dimensional motion-Horizontal motion and vertical motion-that take place independent ... continuously affects the vertical component, so the vertical motion is a uniformly accelerated motion.

A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum: (1) just after it is dropped (2) when it is just on the half-way (3) just before it touches the ground (4) when it touches the ground

Description : A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum: (1) just after it is dropped (2) when it is just on the half-way (3) just before it touches the ground (4) when it touches the ground

Last Answer : (3) just before it touches the ground Explanation: When an object reaches the ground it has its maximum value of kinetic energy just before touching the ground. Since kinetic energy + potential energy ... energy of an object becomes zero (0). The kinetic energy on reaching ground becomes maximum.

A sphere rolls down on two inclined planes of different angles but same height, it does so – (1) in the same time (2) with the same speed (3) in the same time with the same speed (4) in the same time with the same kinetic energy

Description : A sphere rolls down on two inclined planes of different angles but same height, it does so – (1) in the same time (2) with the same speed (3) in the same time with the same speed (4) in the same time with the same kinetic energy

Last Answer : (2) with the same speed Explanation: The velocity of the sphere at the bottom depends only on height and acceleration due to gravity. Both these values are constants. Therefore, the velocity at the bottom ... . The kinetic energy will be the same. What will differ is time taken to reach the bottom.

In a water lifting electric pump, We convert – (1) Electrical energy into Potential energy (2) Kinetic energy into Electrical energy (3) Kinetic energy into Potential energy (4) Electrical energy into Kinetic energy

Description : In a water lifting electric pump, We convert – (1) Electrical energy into Potential energy (2) Kinetic energy into Electrical energy (3) Kinetic energy into Potential energy (4) Electrical energy into Kinetic energy

Last Answer : (1) Electrical energy into Potential energy Explanation: In a water lifting electric pump, we convert electrical energy into potential energy. In hydraulic pump mechanical energy in converted into potential energy

The temperature of a body is an indicator of – (1) The total energy of the molecules of the body (2) The average energy of the molecules of the body (3) The total velocity of the molecules of the body (4) The average kinetic energy of the molecules of the body

Description : The temperature of a body is an indicator of – (1) The total energy of the molecules of the body (2) The average energy of the molecules of the body (3) The total velocity of the molecules of the body (4) The average kinetic energy of the molecules of the body

Last Answer : (4) The average kinetic energy of the molecules of the body

The average kinetic energy of the molecules of an ideal gas is directly proportional to – (1) Velocity of Molecules (2) Mass of Molecules (3) Absolute temperature of the gas (4) Temperature of environment

Description : The average kinetic energy of the molecules of an ideal gas is directly proportional to – (1) Velocity of Molecules (2) Mass of Molecules (3) Absolute temperature of the gas (4) Temperature of environment

Last Answer : (3) Absolute temperature of the gas Explanation: The average kinetic energy of gas molecules is directly proportional to absolute temperature only. This implies that all molecular motion ceases if the temperature is reduced to absolute zero.

Kinetic energy depends on – (1) the velocity or speed of the moving body. (2) the mass of the moving body (3) the pressure of the moving body (4) both mass and velocity of the moving body

Description : Kinetic energy depends on – (1) the velocity or speed of the moving body. (2) the mass of the moving body (3) the pressure of the moving body (4) both mass and velocity of the moving body

Last Answer : (4) both mass and velocity of the moving body Explanation: Kinetic energy is the energy associated with the movement of objects. The amount of kinetic energy that an object has depends upon two variables: the mass (m) of the object and the speed (v) of the object.

In which of the following cases, kinetic energy is being used in performing work? (1) Paddling the bicycle to cover a distance (2) Driving a car to cover a distance (3) Wind mill grinding wheat grain (4) Rowing a boat in the lake

Description : In which of the following cases, kinetic energy is being used in performing work? (1) Paddling the bicycle to cover a distance (2) Driving a car to cover a distance (3) Wind mill grinding wheat grain (4) Rowing a boat in the lake

Last Answer : (2) Driving a car to cover a distance Explanation: The work done on any object goes into changing the kinetic energy of that object. Since the work done by the car engine is equal to the change in ... defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by – (1) 2 times (2) 4 times (3) 8 times (4) 16 times

Description : If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by – (1) 2 times (2) 4 times (3) 8 times (4) 16 times

Last Answer : (2) 4 times

The work done by the string of a simple pendulum during one complete oscillation is equal to (1) Total energy of the pendulum (2) Kinetic energy of the pendulum (3) Potential energy of the pendulum (4) Zero

Description : The work done by the string of a simple pendulum during one complete oscillation is equal to (1) Total energy of the pendulum (2) Kinetic energy of the pendulum (3) Potential energy of the pendulum (4) Zero

Last Answer : (4) Zero Explanation: Work done by the string of the simple pendulum during one complete oscillation is zero. Tension in the string exactly cancels the component parallel to the string. This leaves a net restoring force back toward the equilibrium position as equal to zero.

A moving neutron collides with a stationary α-particle. The fraction of the kinetic energy lost by the neutron is – (1) ¼ (2) 1/16 (3) 9/25 (4) 16/25

Description : A moving neutron collides with a stationary α-particle. The fraction of the kinetic energy lost by the neutron is – (1) ¼ (2) 1/16 (3) 9/25 (4) 16/25

Last Answer : (4) 16/25

Automatic wrist watches get energy from - (1) twist in spring (2) liquid crystal (3) kinetic energy (4) movement of our hands

Description : Automatic wrist watches get energy from - (1) twist in spring (2) liquid crystal (3) kinetic energy (4) movement of our hands

Last Answer : (1) twist in spring Explanation: An automatic watch is a watch that continues to operate due to the regular motion of the wearer's wrist.

If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy

Description : If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy

Last Answer : (2) momentum Explanation: If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same momentum.

In which form is the supplied heat energy stored during change in temperature of substance? (1) Heat energy (2) Kinetic energy (3) Potential energy (4) Both kinetic and potential energy

Description : In which form is the supplied heat energy stored during change in temperature of substance? (1) Heat energy (2) Kinetic energy (3) Potential energy (4) Both kinetic and potential energy

Last Answer : (2) Kinetic energy Explanation: Temperature is used as a measure for heat in an object by measuring the amount of kinetic energy in the molecules that make up the object. It is a measure of the average ... from the heat source to the molecules, and it can also change its form from heat to movement.

A body moving in a circular path with a constant speed has a – (1) constant velocity (2) constant acceleration (3) constant kinetic energy (4) constant displacement

Description : A body moving in a circular path with a constant speed has a – (1) constant velocity (2) constant acceleration (3) constant kinetic energy (4) constant displacement

Last Answer : (3) constant kinetic energy Explanation: In circular motion, the magnitude of the velocity of the body is constant but the direction is constantly changing. This means that, even though the speed is ... accelerating. At any instant, the direction of the velocity is a tangent to the circular path.

The energy stored in a watch spring is (1) Kinetic energy (2) Potential energy (3) Heat energy (4) Chemical energy

Description : The energy stored in a watch spring is (1) Kinetic energy (2) Potential energy (3) Heat energy (4) Chemical energy

Last Answer : (2) Potential energy

In a rechargeable cell what kind of energy is stored within the cell? (1) Electrical energy (2) Potential energy (3) Chemical energy (4) Kinetic energy

Description : In a rechargeable cell what kind of energy is stored within the cell? (1) Electrical energy (2) Potential energy (3) Chemical energy (4) Kinetic energy

Last Answer : (3) Chemical energy Explanation: In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. A battery is ... of two half-cells connected in series by a conductive electrolyte containing anions and cations.

A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is – (1) zero (2) one (3) less than one (4) more than one

Description : A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is – (1) zero (2) one (3) less than one (4) more than one

Last Answer : (1) zero Explanation: The rifle and bullet have zero momentum and zero kinetic energy to start with. When the trigger is pulled, the bullet gains some momentum in the forward direction, but this is ... The kinetic energies of the gun and bullet are both positive scalars, however, and do not cancel.

If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy

Description : If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same - (1) velocity (2) momentum (3) acceleration (4) kinetic energy

Last Answer : (2) momentum Explanation: If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same momentum.

The following particles move with same kinetic energy. Which of them has maximum momentum? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle

Description : The following particles move with same kinetic energy. Which of them has maximum momentum? (1) Electron (2) Proton (3) Deutron (4) Alpha Particle

Last Answer : (4) Alpha Particle Explanation: The formula for kinetic energy in terms of momentum for fundamental particles is basically just a quantized version of the classical formula, KE=(P^2)/2m, where KE is kinetic energy, p is momentum and m is the particle’s mass.

Energy that is produced commercially from coal is called – (1) Light energy (2) Kinetic energy (3) Thermal energy (4) Potential energy

Description : Energy that is produced commercially from coal is called – (1) Light energy (2) Kinetic energy (3) Thermal energy (4) Potential energy

Last Answer : (3) Thermal energy Explanation: Thermal enemy, but in most cases coal is used for electricity. The steel industry uses coal (or coke rather) in blast furnaces. Thermal energy is the part of ... through heating, and not been subjected to work input or output, or any other energy-changing processes.

When a body falls from an aeroplane, there is increase in its – (1) Kinetic energy (2) Mass (3) Acceleration (4) Potential energy

Description : When a body falls from an aeroplane, there is increase in its – (1) Kinetic energy (2) Mass (3) Acceleration (4) Potential energy

Last Answer : (3) Acceleration Explanation: The energy possessed by a body by virtue of its motion is called kinetic energy. Potential Energy is the energy possessed by virtue of its position or configuration. When a body falls from an aeroplane, there is increase in its acceleration.

In a perfectly inelastic collision, kinetic energy A. totally disappears B. is increased C. is decreased D. is unchanged

Description : In a perfectly inelastic collision, kinetic energy A. totally disappears B. is increased C. is decreased D. is unchanged

Last Answer :  totally disappears

If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is A. elastic B. inelastic C. conserved D. not conserved

Description : If the total kinetic energy and momentum of a system becomes zero after collision, then the collision is A. elastic B. inelastic C. conserved D. not conserved

Last Answer :  inelastic

Bernoulli's principle states that, for streamline motion of an incompressible non-viscous fluid: A. the pressure at any part + the kinetic energy per unit volume = constant B. the kinetic energy per unit volume + the potential energy per unit volume = constant C. the pressure at any part + the potential energy per unit volume = constanD. the pressure at any part + the kinetic energy per unit volume + the potential energy per unit volume = constantt

Description : Bernoulli's principle states that, for streamline motion of an incompressible non-viscous fluid: A. the pressure at any part + the kinetic energy per unit volume = constant B. the kinetic ... + the kinetic energy per unit volume + the potential energy per unit volume = constant

Last Answer : the pressure at any part + the kinetic energy per unit volume + the potential energy per unit volume = constant

In elastic collisions, A. only the total momentum of the colliding objects is conserved. B. only the total kinetic energy is conserved. C. both of the momentum and total kinetic energy are conserved. D. neither momentum of the colliding bodies nor the total kinetic energy are recoverable.

Description : In elastic collisions, A. only the total momentum of the colliding objects is conserved. B. only the total kinetic energy is conserved. C. both of the momentum and total kinetic energy ... D. neither momentum of the colliding bodies nor the total kinetic energy are recoverable.

Last Answer : both of the momentum and total kinetic energy are conserved.

Energy in deformed solid is called A. stress energy B. potential energy C. kinetic energy D. strain energy

Description : Energy in deformed solid is called A. stress energy B. potential energy C. kinetic energy D. strain energy

Last Answer :  strain energy

If average kinetic energy of molecules is higher, then temperature of gas iA. high B. low C. zero D. infinites

Description : If average kinetic energy of molecules is higher, then temperature of gas is A. high B. low C. zero D. infinite

Last Answer : high

If we double the temperature of an ideal gas, then it's average kinetic energy will be A. halved B. triple the original C. fourth times of original D. doubled

Description : If we double the temperature of an ideal gas, then it's average kinetic energy will be A. halved B. triple the original C. fourth times of original D. doubled

Last Answer : doubled

Work done on an object to bring it to certain point in space is called A. gravitational potential energy B. potential energy C. kinetic energy D. mechanical energy

Description : Work done on an object to bring it to certain point in space is called A. gravitational potential energy B. potential energy C. kinetic energy D. mechanical energy

Last Answer : kinetic energy

At the end of communication system, the signal is converted from radio toA. soundB. mechanical energyC. kinetic energyD. potential energy

Description : At the end of communication system, the signal is converted from radio to A. sound B. mechanical energy C. kinetic energy D. potential energy

Last Answer : sound

If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways? w) average molecular velocity x) total mass y) total molecular kinetic energy z) average momentum per molecule

Description : If two different gases have the same volume, temperature, and pressure and behave like ideal gases, they will also be identical in which one of the following ways? w) average molecular velocity x) total mass y) total molecular kinetic energy z) average momentum per molecule

Last Answer : ANSWER: Y -- TOTAL MOLECULAR KINETIC ENERGY

Ball "A" ROLLS down an inclined plane without slipping. An identical ball, Ball "B", SLIDES down the same inclined plane without rolling. Which of the following statements is true? w) Ball "A" has more kinetic energy x) Ball "B" has more kinetic energy y) their kinetic energies are the same z) their rotational kinetic energies are equal just after release

Description : Ball "A" ROLLS down an inclined plane without slipping. An identical ball, Ball "B", SLIDES down the same inclined plane without rolling. Which of the following statements is true? w) Ball ... y) their kinetic energies are the same z) their rotational kinetic energies are equal just after release  

Last Answer : ANSWER: Y -- THEIR KINETIC ENERGIES ARE THE SAME

The temperature of a gas measures the: w) number of calories of heat present x) average kinetic energy of the particles in the gas y) exact number of particles in the gas z) potential energy of the gas

Description : The temperature of a gas measures the: w) number of calories of heat present x) average kinetic energy of the particles in the gas y) exact number of particles in the gas z) potential energy of the gas

Last Answer : ANSWER: X -- AVERAGE KINETIC ENERGY OF THE PARTICLES IN THE GAS 

Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy

Description : Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy

Last Answer : ANSWER: Z -- BOTH KINETIC AND POTENTIAL ENERGY

Which of the following statements is TRUE about an ELASTIC collision between two particles? Is it true that: w) neither particle loses any of its kinetic energy x) neither particle loses any of its momentum y) the velocity gained by one particle is equal to that lost by the other z) the total kinetic energy before and after the collision remains constant

Description : Which of the following statements is TRUE about an ELASTIC collision between two particles? Is it true that: w) neither particle loses any of its kinetic energy x) neither particle loses any of ... that lost by the other z) the total kinetic energy before and after the collision remains constant

Last Answer : ANSWER: Z -- THE TOTAL KINETIC ENERGY BEFORE AND AFTER THE COLLISION RE

During an INELASTIC collision, the colliding bodies w) lose kinetic energy x) keep the same amount of kinetic energy y) gains kinetic energy z) first lose, then gain kinetic energy

Description : During an INELASTIC collision, the colliding bodies w) lose kinetic energy x) keep the same amount of kinetic energy y) gains kinetic energy z) first lose, then gain kinetic energy

Last Answer : ANSWER: W -- LOSE KINETIC ENERGY

A car with a mass of 1000 kilogram is moving at a speed of 10 meters per second. The kinetic energy of the car is: w) 100 Joules x) 5000 Joules y) 10,000 Joules z) 50,000 Joules

Description : A car with a mass of 1000 kilogram is moving at a speed of 10 meters per second. The kinetic energy of the car is: w) 100 Joules x) 5000 Joules y) 10,000 Joules z) 50,000 Joules

Last Answer : ANSWER: Z -- 50,000 JOULES

In a collision, which of the following four quantities is always conserved? w) momentum x) kinetic energy y) torque z) moment of inertia

Description : In a collision, which of the following four quantities is always conserved? w) momentum x) kinetic energy y) torque z) moment of inertia

Last Answer : ANSWER: W -- MOMENTUM

A spring with a force constant of 20 newtons per meter is known to obey Hooke's Law. The spring is attached to a mass of 5 kilograms and placed on a horizontal, frictionless surface. The mass is displaced 3 meters from its equilibrium position and released. What is the kinetic energy of the mass as it passes through its equilibrium position?

Description : A spring with a force constant of 20 newtons per meter is known to obey Hooke's Law. The spring is attached to a mass of 5 kilograms and placed on a horizontal, frictionless surface. The ... and released. What is the kinetic energy of the mass as it passes through its equilibrium position? 

Last Answer : ANSWER: 90 JOULES

A girl throws a 2 kilogram rock vertically upward. It reaches a maximum height of 5 meters. What is the kinetic energy of the rock the instant it leaves the girl's hand?

Description : A girl throws a 2 kilogram rock vertically upward. It reaches a maximum height of 5 meters. What is the kinetic energy of the rock the instant it leaves the girl's hand?

Last Answer : ANSWER: 100 JOULES (accept 98 joules)

In any collision, which of the following is conserved: w) kinetic energy x) velocity y) momentum z) potential energy

Description : In any collision, which of the following is conserved: w) kinetic energy x) velocity y) momentum z) potential energy

Last Answer : ANSWER: Y -- MOMENTUM

A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its potential energy (with respect to the bottom of the plane) when it was at the top of the plane y) less than its kinetic energy at the top of the plane z) dependant on the materials of which the block is made

Description : A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its ... kinetic energy at the top of the plane z) dependant on the materials of which the block is made 

Last Answer : ANSWER: X -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.

When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass

Description : When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass

Last Answer : ANSWER: W -- MOMENTUM