Answer:
They are both the same.
Step-by-step explanation:
To work this out you need to see how many joules of work they do in 2 seconds.
It already says John does 500 j of work in 2 seconds so we can leave that to the end.
For Eric, He does 1000 j of work in 4 seconds. To make this into 2 seconds we half 1000 which equals to 500 j.
So that means John and Eric have the same amount of power.
Hope that helps. x