Leaving Cert Ireland · Physics

Energy

2 practice questions, each with the answer and an explanation.

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A force of 80 N acts at 60° to the horizontal on a box, moving it 10 m horizontally. How much work does the force do? ( $cos 6 0^{\circ} = 0.5$ )
A force of 120 N acts at 60° to the horizontal on a box, moving it 2 m horizontally. How much work does the force do? ( $cos 6 0^{\circ} = 0.5$ )

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