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I've got one question couldn't figure out over the night. Here goes:

A trolley is accelerated by a constant force from a motor. If friction forces can be neglected, what would the graph of the power of the motor against time be like?

My answer is a straight horizontal line for some value of P. The answer I was given was a straight line graph from the origin with a postiive gradient. Why is this so? My reasoning is that the motor supplies a constant force which would necessary mean the rate of doing work is constant?

Thanks!

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# Power and Force

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