Respuesta :
The time taken to move the box 5 m with a force of 20 N using a power of 20 W is 5 s
What is power?
Power is simply defined as the rate at which work is done. It can be expressed mathematically as
Power (P) = work (W) / time (t)
But
Work = force (F) × distance (d)
Therefore,
P = Fd / t
How to determine the time
- Force (F) = 20 N
- Power (P) = 20 W
- Distance (d) = 5 m
- Time (t) =?
P = Fd / t
20 = (20 × 5) / t
20 = 100 / t
Cross multiply
20 × t = 100
Divide both side by 20
t = 100 / 20
t = 5 s
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