science
Grade-11
Easy
Question
A rubber ball of mass 0,8 kg is dropped and strikes the floor with an
The initial velocity of 6 m·s−1. It bounces back with a final velocity of 4 m·s−1. Calculate the change in the momentum of the rubber ball caused by the floor.
- 1.4 m/s
- 0m/s
- 8 kg m/s
- none
The correct answer is: 8 kg m/s
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