Question

280Joules of work is done pushing a bike 35m. How much force was used to push the bike?

Answer 1

By definition, the work is given by:

`W=F\cdot d\text{.}`

Where W is the work in Joules (J), F is the force in Newtons (N) and d is the distance in meters (m).

In this problem we have:

• W = 280J,

,

• d = 35m.

We can find the force F in terms of W and d:

`F=(W)/(d)\text{.}`

Replacing the values of W and d, we find that the force F is:

`F=(280J)/(35m)=8(J)/(m)=8N\text{.}`

In the last step, we used that J = N m.

Answer: The force is F = 8N.