A lawnmower engine running for 20 min does 4,560,000 J of work. What is the power output of the engine?

1 Answer
Morgan
May 12, 2017

#P=3800W#

Explanation:

Power is given by energy per unit of time, commonly in joules per second (equivalent to watts). You may think of it as rate at which work is performed.

#P=W/t#

We are given #W=4560000J# and #t=20min=1200s#.

#=>P=(4560000J)/(1200s)#

#=3800W#

Thus, the power output of the engine is #3800# watts.

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