Question

A body pulled over a distance of 500m by a force of 20N. If the power developed is 0.4kw calculate the time intervertebral during which the force is applied

Answer 1

Answer:25 seconds

Explanation: Power equals work/time or force*displacement/time.

So, in this case the force is 20N and the displacement is 500m so the work is 10,000N.

We know the power equals 0.4KW (which equals 400W). Plugging these values into the equation:

400=10,000/T

T=25s