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Work, Energy and Power
Assertion: KE is conserved at every instant of elastic collision.
Reason: No deformation of matter occurs in
elastic collision.
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.
Kinetic energy is not conserved at every instant of elastic collision because there will be friction and deformation losses of energy.
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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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