A crate of mass 42 kg is pushed across a level floor by a person. If the person exerts a force of 20 N in the horizontal direction and moves the crate a distance of 11 m, what is the work done by the person? _____J
To determine the work done by the person in pushing the crate, we can use the formula:
Work = Force × Distance
In this case, the force applied is 20 N, and the distance moved is 11 m. Hence, we can substitute these values into the formula:
Work = 20 N × 11 m
Multiplying 20 N by 11 m gives us:
Work = 220 N⋅m
The unit N⋅m is equivalent to Joules (J) since 1 J = 1 N⋅m. Hence, the work done by the person is 220 J.