Question

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 1

Answer:

Explanation

we have to first find the velocity of the body at 4 seconds

by newtons law

v = u + at

here u = o

therefore v = 2 * 4 = 8 m/s

so momentum of body at 4 seconds = mass * speed at four seconds

                        = 15 * 8 = 120 kg s / m