Physics Quiz: Forces, Friction, and Motion

What is the condition for translational equilibrium?

• Fnet = 0
• Fnet > 0
• Fnet < 0
• Fnet = ma

Which of the following statements about static friction is true?

• It always equals the applied force.
• It can never exceed the maximum static friction.
• It acts in the same direction as motion.
• It is always less than dynamic friction.

What does Hooke's law describe?

• The relationship between force and acceleration.
• The relationship between spring force and extension.
• The relationship between mass and velocity.
• The relationship between friction and surface area.

If a spring is compressed, what direction does the restoring force act?

• To the left
• To the right
• Upwards
• Downwards

What is the coefficient of kinetic friction (μk)?

• A measure of static friction
• A measure of friction when surfaces are in motion
• Always greater than static friction
• Independent of surface type

Which of the following forces acts perpendicular to an inclined plane?

• Weight
• Normal force
• Frictional force
• Applied force

In a perfectly elastic collision, which of the following is conserved?

• Momentum only
• Kinetic energy only
• Both momentum and kinetic energy
• Neither momentum nor kinetic energy

What happens to the centripetal force as the speed of an object in circular motion increases?

• It decreases
• It remains constant
• It increases
• It becomes zero

Which equation represents the relationship between force and momentum?

• F = ma
• F = Δp / Δt
• F = mg
• F = μN

What is the effect of increasing the angle of an inclined plane on the acceleration of an object sliding down?

• Acceleration decreases
• Acceleration remains constant
• Acceleration increases
• Acceleration becomes zero