Question

force applied on a body of mass 4 kg for 5 seconds changes its velocity from 10m/s to 20m/s. find the force required

Answer 1

Answer:

Explanation:

Acceleration =vf-vi/t

=20-10/5=2

As F=ma

=4*2=8N

Answer 2

Answer: 8 N

Explanation:

Method is given in the picture

First find the acceleration and then multiply acceleration with mass yo get force