PH-845
Conservation of energy
Physics · Secondary 3 · Hard · Conservation of energy
A 0.50 kg bird glides horizontally at 10 m/s and then rises 4.0 m to a branch. Take . Ignoring air resistance, what is its speed when it reaches the branch?
- 2.0 m/s
- 4.5 m/s
- 6.0 m/s
- 8.0 m/s
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