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A body of mass 15 kg is moving with an acceleration of 2 meter per second square at time 4 second. What is momentum of body if it started with initial 0 m/sec?

Answer»

Explanationwe have to first FIND the velocity of the body at 4 secondsby newtons law v = u + athere u = otherefore v = 2 * 4 = 8 m/sso momentum of body at 4 seconds = MASS * SPEED at four seconds                         = 15 * 8 = 120 kg s / m



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