Q. 94.5( 2 Votes )
Give reason for the following :
Can a body have momentum without having energy? Explain.
Answer :
Momentum = mass × velocity
A body can only possess velocity if it has kinetic energy and if does not have that energy than velocity = 0, using this value in above mentioned formula
Momentum = mass × 0
Momentum = 0
So, a body cannot have momentum without having energy.
Sometimes even if a body has energy, its momentum can be zero. For example: a brick lying on the roof of a building possess potential energy but no velocity so momentum will be zero.
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