PH-908
Conservation of energy
Physics · Secondary 3 · Hard · Conservation of energy
A 5.0 kg object is dropped from rest from a height of 8.0 m. Ignore air resistance and take . What is its speed just before it hits the ground?
- 13 m s^-1
- 8.0 m s^-1
- 20 m s^-1
- 4.0 m s^-1
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