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k0ka [10]
3 years ago
9

Use this formula to solve this problem:

Physics
2 answers:
Nutka1998 [239]3 years ago
8 0
Power is work / time. work is force * distance so it is
   =300 * 15 / 10
   =4500 / 10
   =450Watts or 0.45KiloWatts
Maslowich3 years ago
6 0
Well, you gave us the formula to calculate power from work and time,
but you didn't give us the formula for work.  We have to know that.

             Work = (force) x (distance)

The work to raise Sara to the top of the hill is

               Work = (300 N) x (15 meters)

                         =   4,500 newton-meters  =  4,500 joules .

Now we're ready to use the formula that you gave us.  (Thank you.)

                Power = (work) / (time)

                            = (4,500 joules) / (10 seconds)

                            450 joules/second  =  450 watts.       
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Answer:

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