Physics
Grade-8
Easy
Question
There are two cars, car A and car B. Mass of car A is 10000 kg, travelling at 30 
collide with car B of mass 30000 kg travelling at 20 in same direction. After collision, the velocity of car A becomes 40 . Calculate the velocity of car B after the collision?
Hint:
The formula for the law of conservation of momentum is: m 1 u 1 + m 2 u 2 = m 1 v 1 + m 2 v 2.
The correct answer is:
The formula for the law of conservation of momentum is: m 1 u 1 + m 2 u 2 = m 1 v 1 + m 2 v 2.
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