Question

A 3500 kg car hits an 80 kg refrigerator laying in the road (it fell off a truck). Before the collision, the car was travelling 15 m/s and the refrigerator was stationary. After the collision, the car was travelling 12.8 m/s. (assume a completely elastic collision)

   a) Draw a diagram of the before and after collision situations.

            Before                                                             After

   b) What was the initial momentum of the car?

   c) What was the initial momentum of the refrigerator?

   d) What was the total initial momentum of the system?

   e) What is the total final momentum of the system?

   f) What is the final momentum of the car?

   g) What was the final momentum of the refrigerator?

8. What was the final velocity of the refrigerator?

Answer 1