Question

A force of 3.0 newtons applied to an object produces a change in velocity of 12 meters per second in 0.40 second. the mass of the object is?
I am not sure how to solve this problem. Formula for momentum is
p= mass times velocity
impulse (J) = Fnet times time in seconds

Answer 1

Since F = M*a, use

M = F/a

The acceleration (a) is (V2-V1)/t
= 12/0.4 = 30 m/s^2

M = 3.0/30 = 0.10 kg.

Answer 2

Oh. That was quite straight forward. Thank you.