PH-950
Conservation of energy
Physics · Secondary 3 · Hard · Conservation of energy
A 2.0 kg ball is dropped from rest from a height of 5.0 m. Ignore air resistance and take . What is the speed of the ball just before it hits the ground?
- 5.0 m/s
- 7.1 m/s
- 10 m/s
- 20 m/s
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