Question

As you slide a heavy box across the floor, friction applies a force of -60 N over a distance of 5 m. How much work is done by friction?

A. -55 J
B. -60 J
C. -300 J
D. -15 J

Answer 1

C because friction causes the box to be harder to push

Answer 2

Work done, W = -300 Joules

Step-by-step explanation:

It is given that,

Frictional force acting on the floor, F = -60 N

Distance covered, d = 5 m

Work done by the friction is given by the product of force and distance. Mathematically, it is given by :

`W=F* d`

`W=-60\ N* 5\ m`

W = -300 Joules

So, the work done by the force of friction is 300 Joules. Hence, this is the required solution.