A pair of horses uses 350 N to pull a wagon 100 m in 20 seconds. How much work is done, and how much power is used?

1 Answer
Michael
Nov 18, 2015

#(a).# Work = #35"kJ"#

#(b).# Power = #1.75"kW"#

Explanation:

Work done = force x distance moved in direction of force:

#W=350xx100=35000"J"=35"kJ"#

Power is the rate of doing work:

Power in Watts = work done / time taken:

#P=35000/20=1750"W"=1.75"kW"#

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