Basics Laws of Motion and Physical Forces MCQs

By: Prof. Dr. Fazal Rehman | Last updated: August 30, 2024

1. What is Newton’s First Law of Motion also known as?

A) Law of Acceleration
B) Law of Inertia
C) Law of Action and Reaction
D) Law of Universal Gravitation

Answer: B) Law of Inertia

2. According to Newton’s Second Law of Motion, the force acting on an object is equal to:

A) Mass times velocity
B) Mass times acceleration
C) Mass divided by acceleration
D) Acceleration divided by mass

Answer: B) Mass times acceleration

3. Newton’s Third Law of Motion states that:

A) For every action, there is an equal and opposite reaction
B) Force is equal to mass times acceleration
C) An object at rest stays at rest unless acted upon by an external force
D) Energy can neither be created nor destroyed

Answer: A) For every action, there is an equal and opposite reaction

4. Which of the following forces is a contact force?

A) Gravitational Force
B) Magnetic Force
C) Normal Force
D) Electrostatic Force

Answer: C) Normal Force

5. What is the unit of force in the International System of Units (SI)?

A) Newton
B) Joule
C) Pascal
D) Watt

Answer: A) Newton

6. If a car is accelerating, which of Newton’s laws is being applied?

A) First Law
B) Second Law
C) Third Law
D) None of the above

Answer: B) Second Law

7. The gravitational force between two objects increases if:

A) The mass of one object increases
B) The distance between the objects increases
C) Both masses decrease
D) Both objects are replaced with a frictionless surface

Answer: A) The mass of one object increases

8. Which law explains why passengers in a car lurch forward when the car suddenly stops?

A) Newton’s First Law
B) Newton’s Second Law
C) Newton’s Third Law
D) Law of Universal Gravitation

Answer: A) Newton’s First Law

9. What force opposes the motion of objects sliding past each other?

A) Gravitational Force
B) Frictional Force
C) Normal Force
D) Tension Force

Answer: B) Frictional Force

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