Question

A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?

Answer 1

F= 100 N , d= 5 m
Time taken = 10 sec
Power= work/time
[ work = f*d]
100*5/10
= 500/10
= 50 watt

Answer 2

The power used when a 100 N force is applied to move an object through a distance of 5 m at constant speed in 10 seconds is 50 W

We'll begin by calculating the energy. This can be obtained as follow:

Force (F) = 100 N

Distance (s) = 5 m

Energy (E) =?

E = F × s

E = 100 × 5

E = 500 J

Finally, we shall determine the power. This can be obtained as follow:

Energy (E) = 500 J

Time (t) = 10 s

Power (P) =?

$P = \frac{E}{t}\\\\P = \frac{500}{10}$

P = 50 W

Therefore, the power used in moving the object is 50 W.

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