Question

A heavy car of mass 200kg traveling at 10m/s has a head on collision with a sports car B of mass 500kg. If both cars stop dead on colliding, what was the velocity of car B?

Answer 1

Answer:

4m/s

Explanation:

m1v1=m2v2 coservation of momentum

200×10=500×x

(200×10)/500=x

x=4

Answer 2

Explanation:

Mass of car A, m1 = 2000 kg Speed of car A, v1 = 10 m/s Mass of car B, m2 = 500 kg Speed of car B, v2 Acc to law of conservation of momentum m1v1 = m2 v2 200 x10 = 500 x v2/120783/heavy-car-of-mass-2000-kg-travelling-at-10-has-head-on-collision-with-sports-car-of-mass-500-kg