Answer :
The elephant does 80,000 Joules of work while moving the circus wagon 20 meters, using the formula for work: Work = Force x Distance.
First, let's clarify the concept of work in physics. Work is calculated using the formula:
Work (W) = Force (F) x Distance (d)
In this case, it seems there is a confusion because the unit for force is Newton (N) and the unit for work is Joules (J). We'll assume the force is 4000 N (not J, as work is calculated in Joules).
Since the force exerted (4000 N) is applied in moving the wagon over a distance of 20 meters, the work done by the elephant can be calculated as:
W = F x d = 4000 N x 20 m = 80,000 J (or 80 kJ)
