Parho
Get started free
ClassesPricingBlogLibraryLog in

Class 9 Physics · Chapter 3 · Test 2

Newton's Laws of Motion

24 MCQs • Practice Newton’s three laws of motion, inertia, mass, resultant force, free-body diagrams, and the limitations of Newton’s laws using only your supplied Class 9 Physics Chapter 3 text.

MCQs

24 questions · 20 min · 24 marks

Sign up free to take itI have an account

Want to try first? Take the free Physics test: Fundamentals and SI Units

Sample questions

The first 5 of 24. Try each one, then tap to see the answer.

  1. Question 1

    What does Newton's first law state about a body at rest?

    • AIt remains at rest unless acted on by an external force
    • BIt must begin moving after some time
    • CIt always accelerates
    • DIts mass continuously decreases
    Show answer

    Answer: A

    Newton's first law states that a body remains at rest unless an external force changes its state.

  2. Question 2

    What happens to a body moving with uniform velocity in a straight line if no external force acts on it?

    • AIt continues moving with uniform velocity
    • BIt immediately stops
    • CIt must move in a circle
    • DIts speed must increase
    Show answer

    Answer: A

    The first law states that uniform straight-line motion continues unless an external force acts.

  3. Question 3

    What is inertia?

    • AThe tendency of a body to maintain its state of rest or uniform straight-line motion
    • BThe force that always increases speed
    • CThe energy stored in a spring
    • DThe attraction between electric charges
    Show answer

    Answer: A

    The chapter defines inertia as the tendency to maintain rest or uniform straight-line motion.

  4. Question 4

    Which physical quantity measures inertia according to the text?

    • AMass
    • BTemperature
    • CTime
    • DDistance
    Show answer

    Answer: A

    The supplied text states that mass measures inertia.

  5. Question 5

    Why do passengers bend forward when a moving bus stops suddenly?

    • ATheir bodies tend to maintain their motion
    • BTheir mass suddenly increases
    • CGravity disappears
    • DThe bus creates magnetic force
    Show answer

    Answer: A

    The tendency of the body to continue its motion is an example of inertia.

More tests in Dynamics

Practise with a free account

Save your scores, see which chapters need work, and keep a notebook of every question you got wrong.

Create free account