A force of 400.0 N is exerted on a 1,250 N car while moving it a distance of 3.0 m. How much work was done on the car?

Answer 1

The work done is force x distance, regardless of the weight of the car. The 1250 N number is just there to fool you.

Answer 2

W = (400.0N)(3.0m)
= (400 x 3.0)(N x m)
= (1200 N x m
= 1200J