Answer:
W = 250 kJ and P = 138.88 W
Step-by-step explanation:
Weight of the load, F = 500 N
She walks a distance, d = 1/5 km = 500 m
Time, t = 1/2 h = 1800 s
We need to find his work done and the power.
Work done,
W = F d
W = 500 N × 500 m
= 250000 J
= 250 kJ
Power = W/t
Putting all the values,
Hence, the work done is 250 kJ and power is 138.88 W.