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# A car of mass 1000 kg travelling at 32 m/s cleches into a rear of a truck of mass 8000 kg moving in the same direction with a velocity of 4m/s. After the collision the car bounces with a velocity of 8ms^{-1} The velocity of truck after the impact is..m/s

- 8
- 4
- 6
- 9

## The correct answer is: 9

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