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Class 9 Physics · Chapter 3 · Test 4

Friction, Momentum and Impulse

25 MCQs • Practice friction and its types, terminal velocity, methods of reducing friction, momentum, impulse, and conservation of momentum using only your supplied Class 9 Physics Chapter 3 text.

MCQs

25 questions · 20 min · 25 marks

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Sample questions

The first 5 of 25. Try each one, then tap to see the answer.

  1. Question 1

    What does friction do?

    • AResists motion between surfaces in contact
    • BAlways increases the speed of an object
    • CChanges mass into weight
    • DAttracts all objects from a distance
    Show answer

    Answer: A

    Friction resists motion when surfaces are in contact.

  2. Question 2

    What type of effect does friction have on mechanical energy?

    • ADissipative effect
    • BIt always creates momentum
    • CIt removes gravitational force
    • DIt increases mass
    Show answer

    Answer: A

    The textbook describes friction as dissipative because energy used to overcome it appears as heat.

  3. Question 3

    What happens to energy used to overcome friction according to the text?

    • AIt appears as heat
    • BIt becomes mass
    • CIt disappears without any effect
    • DIt always becomes gravitational force
    Show answer

    Answer: A

    The supplied text explains that energy used to overcome friction appears as heat.

  4. Question 4

    Which type of friction acts before an object begins to slide?

    • AStatic friction
    • BKinetic friction
    • CRolling friction
    • DAir resistance
    Show answer

    Answer: A

    Static friction acts before sliding begins.

  5. Question 5

    Which type of friction acts while surfaces slide over each other?

    • AStatic friction
    • BKinetic friction
    • CGravitational force
    • DMagnetic force
    Show answer

    Answer: B

    Kinetic friction acts during sliding.

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