The rate of change of linear momentum of a body falling freely under gravity is equal to it's (1) Kinetic Energy (2) Weight (3) Potential Energy (4) Impulse

The rate of change of linear momentum of a body falling freely under gravity is equal to it's (1) Kinetic Energy (2) Weight (3) Potential Energy (4) Impulse
by

1 Answer

Answer :

(2) Weight Explanation: Rate of change of impulse equals the force. In case of freely falling body the only force is the weight.
by
selected

Related questions

A block slides down a smooth inclined plane when released from the top while another falls freely from the same point. The value of which parameter in the two cases will be identical? a.Time taken to reach the ground b.Kinetic energy at the ground c.Momentum at the ground d.Velocity while touching the ground e.Kinetic energy after one second

Description : A block slides down a smooth inclined plane when released from the top while another falls freely from the same point. The value of which parameter in the two cases will be identical? a.Time ... ground c.Momentum at the ground d.Velocity while touching the ground e.Kinetic energy after one second

Last Answer : d. Velocity while touching the ground

When the velocity of a body is doubled, its 1. acceleration is doubled 2. momentum is doubled 3. kinetic energy becomes four times 4. potential energy is doubled Which of the above is/are correct? (a) 2 only (b) 2 and 3 (c) 3 only (d) 2 and 4

Description : When the velocity of a body is doubled, its 1. acceleration is doubled 2. momentum is doubled 3. kinetic energy becomes four times 4. potential energy is doubled Which of the above is/are correct? (a) 2 only (b) 2 and 3 (c) 3 only (d) 2 and 4

Last Answer : Ans:(b)

Which of the following statement is incorrect? a.A body can have energy without having momentum b.A body cannot have kinetic energy without having momentum c.A body in motion will always have kinetic energy more than the potential energy d.None of the above e.107 dynes

Description : Which of the following statement is incorrect? a.A body can have energy without having momentum b.A body cannot have kinetic energy without having momentum c.A body in motion will always have kinetic energy more than the potential energy d.None of the above e.107 dynes

Last Answer : c. A body in motion will always have kinetic energy more than the potential energy

In the impact problems the following conditions must always be satisfied a.The total kinetic energy remains unchanged b.The total linear momentum remains unchanged c.The magnitude of the total linear momentum is multiplied by the coefficient of restitution d.The kinetic energy of the system is reduced by a factor proportional to the coefficient of restitution e.None of the above

Description : In the impact problems the following conditions must always be satisfied a.The total kinetic energy remains unchanged b.The total linear momentum remains unchanged c.The magnitude of the total linear ... is reduced by a factor proportional to the coefficient of restitution e.None of the above

Last Answer : b. The total linear momentum remains unchanged

What is impulse equal to? (1) Change in momentum (2) Change in force (3) Change in velocity (4) Change in acceleration

Description : What is impulse equal to? (1) Change in momentum (2) Change in force (3) Change in velocity (4) Change in acceleration

Last Answer : (1) Change in momentum Explanation: Impulse is a quantity that describes the effect of a net force acting on an object. The impulsemomentum theorem states that the change in momentum of an object equals the impulse applied to it.

The dimension of which of the following is the same as that of impulse? (1) Volume (2) Momentum (3) Torque (4) Change in the rate of momentum

Description : The dimension of which of the following is the same as that of impulse? (1) Volume (2) Momentum (3) Torque (4) Change in the rate of momentum

Last Answer : (2) Momentum Explanation: The quantity of impulse is force x time interval. In classical mechanics, linear momentum or translational momentum is the product of the mass and velocity of an object. For ... stop afterwards. If the truck were lighter or moving slower, then it would have less momentum.

The dimension of which of the following is the same as that of impulse ? (1) Volume (2) Momentum (3) Torque (4) Change in the rate of momentum

Description : The dimension of which of the following is the same as that of impulse ? (1) Volume (2) Momentum (3) Torque (4) Change in the rate of momentum

Last Answer : Momentum

During SHM which of the following is conserved? a.Kinetic energy b.Potential energy c.Total energy d.Momentum e.All of the above

Description : During SHM which of the following is conserved? a.Kinetic energy b.Potential energy c.Total energy d.Momentum e.All of the above

Last Answer : d. Momentum

The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as a.Principle of conservation of mechanical energy b.Law of gravitation c.Newton's law d.Principle of conservation of momentum e.Law of nature

Description : The statement that the sum of the kinetic and potential energies of a particle in the earth's gravitational field is constant is known as a.Principle of conservation of mechanical energy b.Law of gravitation c.Newton's law d.Principle of conservation of momentum e.Law of nature

Last Answer : a. Principle of conservation of mechanical energy

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

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

According to the kinetic theory, the Kelvin temperature of an ideal gas is proportional to which one of the following. Is the temperature proportional to the gas's average molecular: w) velocity x) momentum y) kinetic energy z) potential energy

Description : According to the kinetic theory, the Kelvin temperature of an ideal gas is proportional to which one of the following. Is the temperature proportional to the gas's average molecular: w) velocity x) momentum y) kinetic energy z) potential energy

Last Answer : ANSWER: Y -- KINETIC ENERGY

Weight of freely falling body?

Description : Weight of freely falling body?

Last Answer : Zero

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

The temperature of water at the bottom of a large waterfall is higher than that of the water at the top, because – (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater potential energy. (3) the kinetic energy of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Description : The temperature of water at the bottom of a large waterfall is higher than that of the water at the top, because - (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has ... of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Last Answer : (3) the kinetic energy of the falling water is converted into heat. Explanation: The water gains kinetic energy as it falls down and loses its potential energy. Assuming no other losses, part of the kinetic energy gain of water is converted into heat, raising the temperature of water.

The temperature of water at the bottom of a large waterfall is higher than that of the water at the top. because (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater potential energy. (3) the kinetic energy of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Description : The temperature of water at the bottom of a large waterfall is higher than that of the water at the top. because (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater ... of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.

Last Answer : the kinetic energy of the falling water is converted into heat.

If two bodies one light and one heavy have equal kinetic energies, which one has a greater momentum? a.Momentum depends on velocities b.Heavy body c.Both have equal momentum d.Nothing can be concluded on the basis of information provided e.Light body

Description : If two bodies one light and one heavy have equal kinetic energies, which one has a greater momentum? a.Momentum depends on velocities b.Heavy body c.Both have equal momentum d.Nothing can be concluded on the basis of information provided e.Light body

Last Answer : b. Heavy body

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

A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200

Description : A thin, flat & square plate measuring 2 m 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will ... heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200

Last Answer : (B) 100

An ice skater is rotating with her arms extended. When she pulls in her arms her rate of rotation increases. Which of the following statements dealing with the process is TRUE? w) Her moment of inertia is increased. x) Kinetic energy is conserved. y) The skater does work when pulling in her arms. z) Angular momentum is increased.

Description : An ice skater is rotating with her arms extended. When she pulls in her arms her rate of rotation increases. Which of the following statements dealing with the process is TRUE? w) Her moment of ... conserved. y) The skater does work when pulling in her arms. z) Angular momentum is increased.

Last Answer : ANSWER: Y -- THE SKATER DOES WORK WHEN PULLING IN HER ARMS 

A bullet is fired from a fifle. If the rifle recoils freely, the kinetic energy of the rifle a.will be the same as the kinetic energy of the bullet b.will be less than the kinetic energy of the bullet c.107 dynes d.will be more than the kinetic energy of the bullet e.

Description : A bullet is fired from a fifle. If the rifle recoils freely, the kinetic energy of the rifle a.will be the same as the kinetic energy of the bullet b.will be less than the kinetic energy of the bullet c.107 dynes d.will be more than the kinetic energy of the bullet e.

Last Answer : b. will be less than the kinetic energy of the bullet

If the Kinetic Energy of a body is increased by 300%, how much will its momentum increase? -Do You Know?

Description : If the Kinetic Energy of a body is increased by 300%, how much will its momentum increase? -Do You Know?

Last Answer : answer:

If the Kinetic Energy of a body is increased by 300%, how much will its momentum increase?

Description : If the Kinetic Energy of a body is increased by 300%, how much will its momentum increase?

Last Answer : 100%

Which of the following do not have identical dimensions? (A) Momentum and impulse (B) Torque and energy (C) Torque and work (D) Moment of a force and angular momentum

Description : Which of the following do not have identical dimensions? (A) Momentum and impulse (B) Torque and energy (C) Torque and work (D) Moment of a force and angular momentum

Last Answer : (D) Moment of a force and angular momentum

The motion of a freely falling body is an example of _______ motion.

Description : The motion of a freely falling body is an example of _______ motion.

Last Answer : uniformly accelerated

Resultant force acting on object and rate of change of linear momentum are A. inversely related B. not related at all C. directly related D. directly proportional

Description : Resultant force acting on object and rate of change of linear momentum are A. inversely related B. not related at all C. directly related D. directly proportional

Last Answer : directly related

The water, that moves downward freely under the influence of gravity (< 1/3 bar) beyond the root zone

Description : The water, that moves downward freely under the influence of gravity (< 1/3 bar) beyond the root zone

Last Answer : Ans.Gravitational water

Energy posses by a body in motion is called - (1) Kinetic Energy (2) Potential Energy (3) Both of Above (4) None of Above

Description : Energy posses by a body in motion is called - (1) Kinetic Energy (2) Potential Energy (3) Both of Above (4) None of Above

Last Answer : (1) Kinetic Energy Explanation: Energy posses by a body in motion is called Kinetic Energy. In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

Out of the following pairs, which one does not have identical dimension? (1) Moment of inertia and moment of a force (2) Work and Torque (3) Angular momentum and Planck's constant (4) Impulse and Momentum

Description : Out of the following pairs, which one does not have identical dimension? (1) Moment of inertia and moment of a force (2) Work and Torque (3) Angular momentum and Planck's constant (4) Impulse and Momentum

Last Answer : (1) Moment of inertia and moment of a force

While catching a ball, a player pulls down his hands to lower the - (1) force/cy (2) momentum (3) impulse (4) catching time

Description : While catching a ball, a player pulls down his hands to lower the - (1) force/cy (2) momentum (3) impulse (4) catching time

Last Answer : (3) impulse

Which of the following physical quantities has no dimension? (1) Force (2) Momentum (3) Impulse (4) Angle

Description : Which of the following physical quantities has no dimension? (1) Force (2) Momentum (3) Impulse (4) Angle

Last Answer : (4) Angle Explanation: Quantities having units, but no dimensions: Plane angle, angular displacement, solid angle. These physical quantities possess units but they does not possess dimensional formulas.

While catching a ball, a player pulls down his hands to lower the – (1) force (2) momentum (3) impulse (4) catching time

Description : While catching a ball, a player pulls down his hands to lower the – (1) force (2) momentum (3) impulse (4) catching time

Last Answer : (2) momentum Explanation: A cricketer lowers his hands while taking a catch to decrease the rate of momentum. Cricketers increase the time by pulling their hand's backward with the ball while taking a ... stop afterwards. If the truck were lighter, or moving slower, then it would have less momentum.

While catching a ball, a player pulls down his hands to lower the– (1) force (2) momentum (3) impulse (4) catching time

Description : While catching a ball, a player pulls down his hands to lower the– (1) force (2) momentum (3) impulse (4) catching time

Last Answer : momentum

Newton's second law states that the net force acting on a body is equal to the body's time rate of change of: w) acceleration x) mass y) momentum z) inertia

Description : Newton's second law states that the net force acting on a body is equal to the body's time rate of change of: w) acceleration x) mass y) momentum z) inertia

Last Answer : ANSWER: Y -- MOMENTUM

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.

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 : horizontal component of its velocity remains constant

A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, it explodes into two fragments of mass ratio 1:2.

Description : A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, it explodes into two fragments of mass ratio 1:2.

Last Answer : A spring ball of mass 0.5 kg is dropped from some height. On falling freely for 10 s, ... m/s. Calculate the kinetic energy supplied during explosion.

The acceleration with which the freely falling bodies are attracted towards the earth is called the?

Description : The acceleration with which the freely falling bodies are attracted towards the earth is called the?

Last Answer : Acceleration due to gravity (g)

Which of the following pair will have identical dimensions? a.Pressure and surface tension b.Work and kinetic energy c.Momentum and force d.Moment of inertia and angular momentum e.None of the above

Description : Which of the following pair will have identical dimensions? a.Pressure and surface tension b.Work and kinetic energy c.Momentum and force d.Moment of inertia and angular momentum e.None of the above

Last Answer : c. Momentum and force

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​

In an inelastic collision, state which of the following statements is true: (a) Momentum is conserved and kinetic energy is conserved. (b) Momentum is not conserved and kinetic energy is conserved. (c) Momentum is conserved and kinetic energy is not conserved. (d) Momentum is kinetic energy are not conserved.

Description : In an inelastic collision, state which of the following statements is true: (a) Momentum is conserved and kinetic energy is conserved. (b) Momentum is not conserved and kinetic energy is conserved ... conserved and kinetic energy is not conserved. (d) Momentum is kinetic energy are not conserved.

Last Answer : Ans:(c)

A moving bullet hits a solid target resting on a frictionless surface and gets embedded in it. What is conserved in this process? (a) Both momentum and kinetic energy (b) Kinetic energy alone (c) Momentum alone (d) Neither momentum nor kinetic energy

Description : A moving bullet hits a solid target resting on a frictionless surface and gets embedded in it. What is conserved in this process? (a) Both momentum and kinetic energy (b) Kinetic energy alone (c) Momentum alone (d) Neither momentum nor kinetic energy

Last Answer : Ans:(c)

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.

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.

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

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.

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

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