Question

5. An object at rest on a frictionless plane is pushed with a steady force of 10N for 8
seconds. Find its momentum at the end of the 8th second.
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Class 9 Physics
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Answer 1

Answer:

force = mass × acceleration

since, the body is moving with a constant force,

therefore the initial velocity will be zero at t = 0

force = mass × velocity / time

force × time = mass × velocity

10 × 8 = mass × velocity

since we know, that mass × velocity = momentum

So, momentum = 80 kg m/ s

Explanation:

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