Question

Velocity of an object of mass 5 kg increases from 3 m/s to
7 m/s on applying a force continuously for 2 s.Find out the force applied. If the duration for which force acts is extended to 5s, what will be the velocity of the object then? Answer based on Second Law Of Motion (newton's Law)​

Answer 1

Answer:

Force=10N

Velocity=13m/s

Answer 2

Answer:

Given,

Mass = 5kg

initial velocity=3m/s

Final velocity=7m/s

Time=2s

Now acceleration= v-u/t

=7-3/2

=4/2

=2m/s²

So, acceleration=2m/s²

Now,

F=ma

=5*2

=10N

.