Question

the velocity of a particle of mass 150 g changes from 8m/s to 12m/s in two second. assuming that a constant force acts on it, find the magnitude of the force

Answer 1

force = mass × acceleration.
acceleration = change in velocity / time.
a = 12-8/ 2 = 2 m/s
m = 150 g = 0.15 kg.
since u have to convert all to S.I units or c.gs units.
i am doing it in s.i. units.
force = 0.15 × 2 kg m/s
force = 0.3 N..

Answer 2

Answer:

0.3N

Explanation:

Given,

mass of the particle, m=150g =0.15kg

Initial velocity, u=8m/s

Final velocity, v=12m/s

time taken, t=2s

acceleration, a=v-u/t

=12-8/2

=2m/s

force, f=m*a

=0.15*2

=0.3N answer.