Question

A force of 25 newton is applied on an object of mass 10 kg moving with a velocity of 5 m/s. If the object gains a velocity of 10 m/s calculate time

Answer 1

Answer:

Explanation:

F=25

25=ma

25=10a

a=2.5m/s^2

V=u+at

10=5+2.5t

t=2sec

Answer 2

Answer:

We know force

$= \frac{change \: of \: momentum}{time}$

Here change of momentum

=m(v2-v1)

=10*(10-5)

=50 kg. m/s

Force =25N

So, 25 =50/t

Or, t=50/25 =2 sec.