Question

If a 54 kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated?

Answer 1

Power, P = 600 watts

Step-by-step explanation:

It is given that,

Mass of sprinter, m = 54 kg

Speed, v = 10 m/s

Time taken, t = 3 s

We need to find the average power generated. The work done divided by time taken is called power generated by the sprinter i.e.

`P=(W)/(t)`

Work done is equal to the change in kinetic energy of the sprinter.

`P=((1)/(2)mv^2)/(t)`

`P=((1)/(2)* 54\ kg* (10\ m/s)^2)/(3\ s)`

P = 900 watts

So, the average power generated by the sprinter is 900 watts. Hence, this is the required solution.