Friction - Jamb Physics Past Questions and Answers

Question 36:

• JAMB 2019

The limiting frictional force between two surfaces depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surfaces

A. I only
B. II only
C. III only
D. I & IV only

Question 37:

• JAMB 2019

A boy pushes a 500kg box along a floor with a force of 2000N. If the velocity of the box is uniform, the co-efficient of friction between the box and the floor is

A. 1
B. 0.8
C. 0.65
D. 0.4

Question 38:

• JAMB 2021

When the breaks in a car are applied, the frictional force on the tyres is?

A. A disadvantage because it is in the direction of the motion of the car
B. A disadvantage because it is in the opposite direction of the motion of the car
C. An advantage because it is in the direction of the motion of the car
D. An advantage because it is in the opposite direction of the motion of the car