Class 11 Physics (Part I) Chapter 3 Laws Of Motion Quiz 45 (14 MCQs)

Quiz Instructions

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1. Which of the following is an example of Newton's 1st Law of motion?

Correct Answer: D) All of the above.

2. What explains why objects resist changes in their state of motion?

Correct Answer: B) Inertia.

3. What is Newton's 2nd Law?

Correct Answer: B) Acceleration depends on two variables, the mass of the object and the amount of force.

4. Rubbing your hands together releases ..... energy.

Correct Answer: A) Thermal.

5. According to Newton's first law of motion .....

Correct Answer: B) An object in motion will stay in motion unless acted upon by an outside force.

6. Which of the following has less inertia?

Correct Answer: A) Feather.

7. If you lean against a wall, the wall pushes back on you with a(n) weaker force. (Think about what Newton's 3rd law said)

Correct Answer: B) False.

8. Newton's second law of motion states that an unbalanced force is equal to mass times:

Correct Answer: A) Acceleration.

9. A motorcycle and a bus are moving with same momentum. Which has greater KE

Correct Answer: C) Motorcycle.

10. Passengers lean forward when the sudden brake is applied in a moving vehicle. This can be explained by

Correct Answer: B) Inertia of motion.

11. A chair exerts a force of 20 N on a floor. What is the force that the floor exerts on the chair?

Correct Answer: B) 20 N.

12. As the force of the fuel explosion exists out of the back of the sled, the sled goes forward.

Correct Answer: C) Newton's 3rd Law.

13. A car speeding up, a dog slowing down and person turning around the block are examples of .....

Correct Answer: B) Unbalanced Forces.

14. Newton's third Law of Motion states which of the following?(Remember the balloon.)

Correct Answer: C) For every action, there is an equal and opposite reaction.