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1. |
A car of mass 1ton is moving with a velocity of 25 m/s towards left. A truck of mass 5 ton is moving towards left with a velocity of 3 m/s. If the collision is perfectly elastic, what is the final velocity of the truck in m/s? |
A. | 11 |
B. | 25 |
C. | 3 |
D. | 10 |
Answer» D. 10 | |