Question

A horse performs 15000 joules of work pulling a wagon for 20 seconds what is the horses power

Answer 1

To find the horse power per second. Divide 15000 by 20( 15000÷20 ). The answer is 750.

Answer 2

The horse's power is 750 W

From the question,

We are to determine the horse's power

Power is the rate at which work is done

∴ The horse's power can be determine by using the formula

$Power = \frac{Work}{Time}$

From the question

Work = 15000 J

Time = 20 s

Putting the parameters into the formula

$Power = \frac{Work}{Time}$

We get

$Power= \frac{15000}{20}$

∴ Power = 750 W

Hence, the horse's power is 750 W

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