Question

A body of mass 6kg is acted on by a force so that it's velocity changes from 3m/s to 5m/s,then change in momentum


please solve this problem in details.........

Answer 1

Momentum = mv
So change in momentum = mv-mu = 6*5-6*3=12 kg*m/s

Answer 2

Let the initial velocity be 'u' and final velocity be 'v' and mass if the object be 'm'

then momentum = mv

Change in momentum = (final - initial) momentum
=> mv - mu
=> m(v-u)
=> 6kg ( 5-3) m/s
=> 12 Kg m /s