Alawnmower engine running for 20 min does 4560000 j of work. what is the power output of the engine? (power: p = w/t) a: 3800 w b: 228,000 w c: 91,200,000 w d: 547,200,000 w

Power output, P = 3800 watts

Explanation:

It is given that,

Work done by the lawnmover engine, W = 4560000 J

Time taken, t = 20 min = 1200 sec

We have to find the power output of the engine. Power of an engine is given by work done per unit time taken i.e.

P = 3800 Watts

Hence, the power output of the engine is 3800 watts.

there are no contact forces mentioned on the list of choices that you've provided.