A hockey puck is pushed by a stick with a force of 750 newtons. The puck travels 2.0 meters in 0.30 seconds. How powerful is the push? (Ignore frictional effects.)

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asked Jul 9, 2019 94.7k views

1 Answer

Mateus Neves · Answer 1 · 2019-07-13T11:06:44+0000

The work done by the force pushing the puck is equal to the product between the force and the distance covered:

W=Fd=(750 N)(2.0 m)=1500 J

And the power is the work done per unit time:

P= (W)/(t)

and using t=0.30 s, we find the power:

P= (1500 J)/(0.30 s)=5000 W