Question

A 1200 kg car traveling at an unknown velocity has a rear-end collision with a 1600 kg car parked in the road. The cars lock bumpers and skid off together at 3.0 m/s. What was the velocity of the 1200 kg car right before the collision?

Answer 1

Gotta be it

Step-by-step explanation:

m1*v1 = m2*v2

1200*v1 = 1600*3

1200*v1 = 4800

v1 = 4800 / 1200

v1 = 4.0 m/s