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You are pushing a lawn mower a distance of 0.20 km with an average force of...

You are pushing a lawn mower a distance of 0.20 km with an average force of 90 N.

A. What is the work done by your push?

B. If you finish the job in 30 mins, what is your power pushing this lawn mower?

C. If the grass cutter is driven by a 7.5 horse power (HP) engine, what is the power output of this engine in W? (1 HP = 746 Watts)

D. Calculate the energy provided by this engine in 30 mins.

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