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7 June, 23:42

On a planet far, far away, an astronaut picks up a rock. the rock has a mass of 5.10 kg, and on this particular planet its weight is 40.0 n. if the astronaut exerts an upward force of 53.7 n on the rock, what is its acceleration? magnitude

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  1. 7 June, 23:48
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    The net force is the difference between upwards force and downwards force, so 53.7N-40N=13.7N=∑F. ∑F=ma, m=5.1kg, so a=13.7N/5.1kg.
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