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 8 second.
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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
momentum = 80 kg m/ s ans.
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