Physics Quiz on Stopping Distance, Deformation, Hooke's Law, and Moments

What is the total stopping distance of a vehicle if the thinking distance is 30 meters and the braking distance is 50 meters?

• 80 meters
• 30 meters
• 50 meters
• 100 meters

Which of the following factors does NOT influence the thinking distance of a driver?

• Speed
• Reaction time
• Mass of the vehicle
• Distraction

According to Hooke's Law, what happens to the force exerted on a spring if the extension is doubled, assuming the spring constant remains the same?

• The force remains the same
• The force doubles
• The force triples
• The force is halved

If a force of 10 N is applied at a perpendicular distance of 2 m from the pivot, what is the moment of the force?

• 5 Nm
• 10 Nm
• 20 Nm
• 40 Nm

What is the condition for an object to be in equilibrium?

• The sum of forces is zero
• The sum of clockwise moments equals the sum of anticlockwise moments
• Both A and B
• None of the above

When an object falls under gravity, what is the term for the maximum velocity it reaches when air resistance balances the weight?

• Acceleration
• Terminal velocity
• Initial velocity
• Final velocity

If the spring constant (k) of a spring is 200 N/m and the extension (c) is 0.5 m, what is the force (F) exerted by the spring according to Hooke's Law?

• 100 N
• 200 N
• 300 N
• 400 N

Which of the following statements is true regarding braking distance?

• It decreases with increased speed
• It is influenced by road conditions
• It is always constant
• It is only affected by the mass of the vehicle

In a system where the clockwise moments equal the anticlockwise moments, what can be inferred about the motion of the object?

• It is accelerating
• It is in equilibrium
• It is in motion
• It is at rest

If a car's speed doubles, what happens to its thinking distance, assuming reaction time remains constant?

• It doubles
• It triples
• It halves
• It remains the same