Question

A moving car of mass 500kg collides with a stationary truck of mass 1500kg, and the two vehicles lock together on impact. The combined velocity of the car and truck after the collision is 20m/s. The velocity of the car before the collision is ___ m/s.

Answer 1

Answer:

80m/second

Step-by-step explanation:

let velocity of car before collision be v m/s

500v= (500+1500) × 20

=> v = 2000×20/500= 80 m/s

Answer = 80m/s