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1 November, 08:15

If a car has a mass of 200 kilograms and produces a force of 500 N, how fast will the car accelerate?

If it took you 5 seconds to move a rock 15 meters using a force of 150 Newtons, how much power did you need to use?

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  1. 1 November, 08:34
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    Net force = mass x acceleration. acceleration = force/mass = 500/200 = 2.5m/s^2. Power = work done/time. work done = force x displacement = 150x15 = 2250J. Power = 2250/5 = 450W.
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