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.
Description : When the speed of a body is doubled, its kinetic energy becomes (a) double (b) half (c) quadruple (d) one-fourth
Last Answer : Ans:(c)
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
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
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
Description : If the mass of the body is doubled and velocity is made halved, the kinetic energy will become? -Physics 9th
Last Answer : New kinetic energy becomes, So, the new kinetic energy of the object gets doubled.
Description : 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
Last Answer : (2) Weight Explanation: Rate of change of impulse equals the force. In case of freely falling body the only force is the weight.
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
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
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.
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 : Acceleration
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
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.
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.
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 : constant kinetic energy
Description : If velocity is doubled, kinetic energy be- come?
Last Answer : Four times
Description : If magnetic field is doubled then magnetic energy density becomes: a. Four times b. Two times c. Three times d. Six times
Last Answer : c. Three times
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
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
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.
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
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
Description : What would be the momentum of the passenger bus its velocity were doubled?
Last Answer : a) doubledb) tripledc) doubled (assuming the engine is used to bring it back to thesame speed)d) quadruplede) halved
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
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
Description : A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that (a) Its ... ) Its acceleration is constant (c) Its kinetic energy is constant (d) It moves in a circular path
Last Answer : Ans:(d)
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
Description : An electron moving with a velocity of 5 10 3 m / s enters into a uniform electric field and acquires a uniform acceleration of 10 3 m / s 2 in the direction of initial velocity. i. ... which electron velocity will be doubled.? ii. How much distance electron would cover in this time.? -Science
Last Answer : Given u=5×103m/su=5×103m/s , a=103m/s2a=103m/s2, v=2u=104v=2u=104 m/s i.Using v=u+atv=u+at 104=5×103+103t104=5×103+103t or t=5 sec ii. Using s=ut+12at2s=ut+12at2 s=5×103×5+12×103×52s=5×103×5+12×103×52 =37.5×103m=37.5×103m
Description : If the mass of a moving body is doubled, its kinetic energy is?
Last Answer : Doubled
Description : In a collision, which of the following four quantities is always conserved? w) momentum x) kinetic energy y) torque z) moment of inertia
Description : An object of mass m and velocity v has kinetic energy= 200J. Find the new kinetic energy if the mass of the object becomes double and velocity still remains the same? -Physics 9th
Last Answer : let the k.e. in first case be x x = 1/2*m*v^2=200j in second case let the kinetic energy be x' v'=v m'=2m x'= 1/2*2m*v^2 x'= 2(1/2*m*v^2) x'=2(x) x'=2*200j x'=400j
Description : The spokes used in the wheel of a bicycle increase its – (1) Moment of inertia (2) Velocity (3) Acceleration (4) Momentum
Last Answer : (1) Moment of inertia Explanation: A spoke is one of some number of rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round ... synthetic fibers, are also occasionally used. Metal spokes used in bicycles also increase the moment of inertia.
Description : The spokes used in the wheel of a bicycle increase its (1) Moment of inertia (2) Velocity (3) Acceleration (4) Momentum
Last Answer : Moment of inertia
Description : If two bodies, one heavy and one light, are acted upon by the same force for the same time, then both bodies acquire the same (a) velocity (b) momentum (c) acceleration (d) speed
Last Answer : Ans:(b)
Description : During planetary motion which of the following remains constant? a.Augular speed b.Linear velocity c.Angular acceleration d.Total angular momentum e.All of the above
Last Answer : b. Linear velocity
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.
Description : Interaction that causes an object's momentum to change is A. velocity B. acceleration C. power D. force
Last Answer : force
Description : Mass and velocity are combined to give A. angular momentum B. equilibrium C. acceleration D. linear momentum
Last Answer : linear momentum
Description : Direction of momentum is direction of object's A. mass B. acceleration C. velocity D. frictional force
Last Answer : velocity
Description : An object in equilibrium always has zero: w) velocity x) momentum y) mass z) acceleration.
Last Answer : ANSWER: Z -- ACCELERATION
Description : In physics, a radian per second squared is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.
Last Answer : ANSWER: Y -- ANGULAR ACCELERATION
Description : In physics, a radian per second is a unit of: w) angular displacement x) angular velocity y) angular acceleration z) angular momentum.
Last Answer : ANSWER: X -- ANGULAR VELOCITY
Description : If the Kinetic Energy of a body is increased by 300%, how much will its momentum increase? -Do You Know?
Last Answer : answer:
Description : If the Kinetic Energy of a body is increased by 300%, how much will its momentum increase?
Last Answer : 100%
Description : Which of the following statement is wrong? (A) A flow whose streamline is represented by a curve is called two dimensional flow. (B) The total energy of a liquid particle is the sum of potential energy, ... (D) A pitot tube is used to measure the velocity of flow at the required point in a pipe.
Last Answer : Answer: Option C
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.
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
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 : 4 times
Description : If speed of a car becomes 4 times, its kinetic energy becomes -Physics
Last Answer : (c) 16 times