Distance = 100 meters
Power = 1000 watts
Work is defined as force over distance. So we have the following equation:
W = F * D
Solving for D and the substituting the known values and calculating
W = F * D
W/F = D
20000 J/200 N = D
20000 Nm/200 N = D
100 m = D
So the work was done over a distance of 100 meters.
Power is work over time, so just divide the number of Joules performed by the time it took to perform the work. So
20000J / 20s = 1000 J/s = 1000 W
So the machine has 1000 watts of power.
