Q

A 2000 kg truck travelling at 10 m/s hits a stationary car. They move together at 8 m/s after the collision. Find the car's mass.

RRB Group D 22/09/2018 / Shift-I 2018
✓ Answer: C 500 kg
2000 × 10 = (2000 + m) × 8, so m = 500 kg.
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