Posted by **Lindsey** on Tuesday, November 22, 2011 at 11:54pm.

In the winter sport of curling, players give a 20 kg stone a push across a sheet of ice. A curler accelerates a stone to a speed of 3.0 m/s over a time of 2 s.

a)How much force does the curler exert on the stone?

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

- Physics -
**drwls**, Wednesday, November 23, 2011 at 12:09am
The acceleration rate while pushing is 3.0/2 = 1.5 m/s^2

The force required to accelerate the stone at that rate is F = M*a = 30 N.

This assumes zero ice friction resistance. That is a fairly good assumption, since they travel so far.

Average power = (kinetic energy added)/(2 seconds)

= (M/2)Vfinal^2/Time = 45 watts

## Answer This Question

## Related Questions

- Physics 20 - dynamics A curling stone has a mass of 20kg. a curler pushed the ...
- Physics 20 - dynamics A curling stone has a mass of 20kg. a curler pushed the ...
- Physics - A curling stone with a mass of 18 kg slides 38m across a sheet of ice ...
- Physics question - 1.) If the curling stone was initially sliding at 2.97 m/s ...
- Physics - A 20.0kg curling stone at the hog line and moves 28.35m [west] to sit ...
- Physics - A stationary curling stone is struck in a glancing collision by a ...
- Physics - While standing at the edge of the roof of a building, you throw a ...
- physics - While standing at the edge of the roof of a building, you throw a ...
- physics - While standing at the edge of the roof of a building, you throw a ...
- physics - While standing at the edge of the roof of a building, you throw a ...

More Related Questions