A car of mass 1,200 kg is moving with a constant velocity on a straight road. Which of the following statements is true regarding the forces acting on the car?

A. The net force acting on the car is zero.

B. The car is accelerating due to an unbalanced force.

C. The car is decelerating due to an external force.

D. The car is moving due to the absence of any forces.

A box of mass 5 kg is subjected to a force of 10 N. What is the acceleration of the box?

A. 0.5 m/s^2

B. 1 m/s^2

C. 2 m/s^2

D. 10 m/s^2

When you push a wall with a force of 50 N, how much force does the wall exert on you?

A. 0 N

B. 25 N

C. 50 N

D. 100 N

A 10 kg object is subjected to two forces: 5 N to the right and 3 N to the left. What is the net force acting on the object?

A. 2 N to the right

B. 2 N to the left

C. 8 N to the right

D. 8 N to the left

Which of the following is NOT an example of Newton's First Law in action?

A. A book resting on a table.

B. A ball rolling on a frictionless surface.

C. A car accelerating when the gas pedal is pressed.

D. A satellite orbiting Earth in space.

a) Define Newton's First Law of Motion and explain its significance in understanding the concept of inertia. [3]

b) A book is placed on a table. Identify the forces acting on the book and explain how Newton's First Law is applicable in this scenario. [2]

a) Describe the relationship between force, mass, and acceleration as stated by Newton's Second Law of Motion. [2]

b) A car of mass 1000 kg accelerates from rest to 20 m/s in 10 seconds. Calculate the net force exerted on the car during this time. [3]

a) State Newton's Third Law of Motion and provide a real-world example illustrating this law. [2]

b) In a tug-of-war game, if team A exerts a force of 500 N to the right, what force does team B exert and in which direction? [2]

a) Define inertia and explain how it is related to Newton's First Law of Motion. [2]

b) A 5 kg object is at rest on a frictionless horizontal surface. If a horizontal force of 10 N is applied to the object, calculate its acceleration. [2]

c) How long will it take for the object to reach a speed of 20 m/s starting from rest? [3]

a) Differentiate between weight and mass. [2]

b) If an object has a mass of 50 kg, calculate its weight on Earth. (Use g = 9.81 m/s^2 for acceleration due to gravity) [2]

c) How would the weight of the object change if it were taken to the moon where the acceleration due to gravity is approximately 1/6th of that on Earth? [3]

An object of mass m experiences an acceleration of a when a force F is applied. If the mass of the object is doubled and the same force is applied, what will be the new acceleration?

A. a

B. 2a

C. a/2

D. 4a

Two students push a box in opposite directions with forces of 15 N and 10 N, respectively. What is the net force on the box?

A. 5 N in the direction of the 15 N force

B. 5 N in the direction of the 10 N force

C. 25 N in the direction of the 15 N force

D. 25 N in the direction of the 10 N force

Which of the following statements best describes Newton's Third Law?

A. An object in motion stays in motion.

B. Force equals mass times acceleration.

C. For every action, there is an equal and opposite reaction.

D. Gravity pulls objects towards the centre of the Earth.

A 20 kg box is pulled across a frictionless floor with a force of 40 N. What is the acceleration of the box?

A. 0.5 m/s^2

B. 1 m/s^2

C. 2 m/s^2

D. 4 m/s^2

If you press your hand against a wall, the wall exerts a force on your hand. This is an example of which of Newton's laws?

A. First Law

B. Second Law

C. Third Law

D. Law of Gravitation

a) State Newton's Third Law of Motion. [2]

b) When a person jumps off a boat, the boat moves backwards. Explain this phenomenon using Newton's Third Law. [3]

c) If a 60 kg person jumps off a boat with a velocity of 3 m/s, and the boat has a mass of 240 kg, what will be the velocity of the boat? [3]

a) What is meant by the term "net force"? [2]

b) Two forces of magnitudes 10 N and 15 N act on an object in the same direction. Calculate the net force acting on the object. [2]

c) If these two forces acted in opposite directions, what would be the net force? [2]

a) What is a force and what is its unit? [2]

b) A 1200 kg car experiences a net force of 2400 N. What is its acceleration? [2]

c) If the car starts from a standstill, how fast is it moving after 5 seconds? [3]

d) How far has the car travelled in this time? [3]

a) How do static and kinetic friction differ? [2]

b) A 50 N box is on a flat surface. If the static friction between the box and the surface is 0.4, what's the maximum static frictional force on the box? [3]

c) If you push the box with a force of 18 N, will it move? Explain. [3]

d) If the box starts moving and the kinetic friction is 0.3, what's the kinetic frictional force on the box? [2]

a) What's Newton's Third Law of Motion? [2]

b) A person weighing 600 N stands on a skateboard. How much force does the skateboard put on the person? [2]

c) If the person jumps up with a force of 800 N, how does the skateboard react? [3]

d) What happens to the skateboard when the person jumps? [3]