Question

You joined a “dogsled” race during your winter break. To start, you 

pulled the sled (total mass of 85 kg) with a force of 195N at 45° above 

the horizontal. Find the work done on the sled after it moves at a 

distance of 7m. 

Answer 1

The work done is

$$W=Fd\cos\theta=195·7·\cos45°=965\text{ J}.$$