Answer:
The work done by the campers is

(b) is correct option.
Step-by-step explanation:
Given that,
Weight = 5000 N
Frictional force = 300 n
Distance = 1000 m
Constant rate of speed = 0.20 m/s²
We need to calculate the force
Using newton's law of motion




We need to calculate the work done
Using formula of work done

Put the value into the formula


Hence, The work done by the campers is
