class 9 physics ch- force and laws of motion
an object of mass 100kg is accelerated uniformly from a velocity of 25m/s to 18m/s . calculate the initial and final momentum of the object.also find the force exerted on it.
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Answer:
the answer is given in two ways
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Explanation:
initial momentum= 100kg x 25 m/s=2500kg
m\s.
final momentum=100kg x18 m/s=1800kg
m/s
change in momentum=2500-1800=700kg
m/s
force exerted=change in momentum
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