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Work, Energy and Power
Assertion: A particle strikes head-on with another stationary particle such that the first particle comes to rest after collision. The collision should necessarily be elastic.
Reason: In elastic collision, there is a loss of momentum ofthe system of the particles.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
D.
If both assertion and reason are false.
In elastic collision there is no loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are consrved quantities in elastic collisions.
In an Inelastic collision, there is a loss of kinetic energy. While the momentum of the system is conserved in an elastic collision, kinetic energy is not.
Momentum of a system remains conserved in any kind of collision.
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By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?
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