Question

1.
A force of 10 N acts on a body of mass 20 kg for
10 s change in its momentum is :
(a) 5 kg m/s
(c) 200 kg m/s
(b) 100 kg m/s (d) 1000 kg m/s​

Answer 1

Answer:

Explanation:

F=10N,m=20kg,t=10s

a=   F /m =  10/20=0.5m/s^2

v=u+at=0+0.5×10=5m/s

• Change in momentum =m(v−u)=20(5−0)=100kgm/s