In the winter sport of curling players give a 20 kilogram, Ask an Expert

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In the winter sport of curling, players give a 20 kilogram stone a push across a sheet of ice. A curler accelerates a stone to a speed of 3.1 m/s over a time 2.2 second.

a) Find how much force does the curler exert on stone?

b) Find what average power does the curler use to bring the stone up to speed?

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