Question

A force acting on a particle of mass 200g. The velocity of particle changes from 15m/'s to 25m/sec in 2s.find it's magnitude

Answer 1

Hey.

Here is the answer.

m = 200 g = 0.200 kg

u = 15 m/s

v = 25 m/s

t = 2s

As, v = u + a t

so, 25 = 15 + a × 2

or, a = 10/2 = 5 m/s^2

So, acceleration is 5m/s^2

Force = m a

so, force = 0.200×5 = 1.0 N

Thanks.