Question

. A heavy car A of mass 2000 kg travelling at 10 m/s has a head-on collision with a sports car B of mass 500
kg. If both cars stop dead on colliding, what was the velocity of car B ?​

Answer 1

Explanation:

initial momentum is equal to final momentum

2000*10+500v=0

20000=-500v

v=-40m/s opposite to A