Momentum and CollisionMediumBloom L3
Question
Ball A of mass 5.0 kilograms moving at 20 m/s collides with ball B of unknown mass moving at 10m/s in the same direction. After the collision, ball A moves at 10 m/s and ball B at 15 m/s, both still in the same direction. What is the mass of ball B?
Options
A.6.0 kg
B.10 kg
C.2.0 kg
D.12 kg
Solution
Sol. 5 × 20 + m × 10 = 5 × 10 + 15m
5m = 50 ⇒ m = 10
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