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2 years ago

Use this formula to solve this problem:

Physics

2 answers:

Nutka1998 [239]2 years ago

8 0

Power is work / time. work is force * distance so it is
   =300 * 15 / 10
   =4500 / 10
   =450Watts or 0.45KiloWatts

Maslowich2 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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Explanation:

Given that,

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1 year ago

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Answer:

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Explanation:

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$\displaystyle v_2=2\sqrt{2gH}$

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Simplifying:

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