Question

a force of 10 Newton acts on a body of mass 20 kg for 10 seconds what is its change in momentum

Answer 1

F = mv-mu/t
10 = mv-mu/10
Change in momentum = 100 Ns or 100kgm/s

Answer 2

Given :

Force = 10 Newton.

Mass = 20 Kg

Time = 10 Seconds

To find :

Change in Momentum.

The change in momentum of an object is its mass times the change in its velocity.

Solution:

We know that,

F=ma

Force = ( mass * acceleration)

F=m*(v-u/t)

Ft=m(v-u)

10*10=change in momentum

Change in Momentum =100 kg.m/s