Question

a 1.5 kg cart initially moves at 2.0 m/s. It is brought to rest by a constant net force in .30s. What is the magnitude of the net force?

Answer 1

Given:

mass (m) = 1.5 kg ,

velocity (v) =2 m/s ,

time (t) = 0.30s ,

magnitude of net force (Fnet) = m. a

= 1.5 × (v/t) since a = v/t

= 1.5 × (2/0.30)

= 10 N

Magnitude of net force is 10 N