Question

When Emma pushes a bag with a force of 27 newtons, the coefficient of kinetic friction between the bag and the floor is 0.23. What is the normal force acting on the bag by the floor? A. 0.085 newtons B. 27 newtons C. 2.7 × 102 newtons D. 1.2 × 102 newtons

Answer 1

D. 1.2 × 102 newtons

Step-by-step explanation:

The computation of the normal force acting on the bag is shown below:

It could find out by applying the following formula

Normal force = Force ÷ coefficient of kinetic friction

where,

Force is 27 newtons

And, the coefficient of kinetic friction is 0.23

Now placing these values to the above formula

So, the normal force is

= 27 newtons ÷ 0.23

= 117.39 N

Therefore the correct option is D.