Aforce of 40.0 n accelerates a 5.0-kg block at 6.0 m/s2 along a horizontal surface.

a) what would be the block's acceleration be if the surface were frictionless?

b) how large is the kinetic friction force?

c) what is the coefficient of kinetic friction?

(a). The block's acceleration be if the surface were friction less is 8 m/s².

(b). The kinetic friction force is 10 N.

(c). The coefficient of kinetic friction is 0.2

Explanation:

Given that,

Force = 40.0 N

Acceleration = 6.0 m/s²

Mass = 5.0 kg

(a). We need to calculate the block's acceleration be if the surface were friction less

Using formula of force

Where, m = 5.0 kg

F = 40.0 N

(b). We need to calculate the kinetic friction force

Using formula of frictional force

Put the value into the formula

(c). We need to calculate the coefficient of kinetic friction

Using formula of friction formula

Hence, (a). The block's acceleration be if the surface were friction less is 8 m/s².

(b). The kinetic friction force is 10 N.

(c). The coefficient of kinetic friction is 0.2