Impulse & Impulse-Momentum Theorem questions with solutions

Showing 1–10 of 21 questions

• MCQeasyCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  Blocks of 10 kg and 4 kg are connected by a spring on a frictionless surface. An impulse gives the 10 kg block velocity 14 m s⁻¹ toward the lighter block. Velocity of centre of mass is:

  Options

  • Option A

    30 m s⁻¹

  • Option B

    20 m s⁻¹

  • Option C

    10 m s⁻¹

  • Option D

    5 m s⁻¹

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• NumericmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  A force acting on a particle increases uniformly from 0 to 20 N during the interval t = 0 to 1 s. It then decreases uniformly from 20 N at t = 1 s to -20 N at t = 3 s. If the net impulse from t = 0 to 3 s is N N·s, find N.

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• MCQmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  A force–time graph for a body is shown. The change in momentum between t = 0 and 10 s is:

  

  Options

  • Option A

    15 kg m s⁻¹

  • Option B

    4 kg m s⁻¹

  • Option C

    6 kg m s⁻¹

  • Option D

    5 kg m s⁻¹

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• MCQmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  A 4 kg body is acted upon by the force–time graph shown: F = 10 N from 0 to 5 s, then it falls linearly to zero at 9 s. The momentum acquired is:

  

  Options

  • Option A

    280 N s

  • Option B

    140 N s

  • Option C

    70 N s

  • Option D

    210 N s

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• Multi-correcteasyCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  Which statements about impulse are correct?

  Select all that apply

  • Option A

    Impulse equals the change in momentum of a particle

  • Option B

    A very large force acting for a very short time can produce a finite impulse

  • Option C

    If the net external impulse on a system is zero, the total momentum of the system remains unchanged

  • Option D

    Equal and opposite internal impulsive forces can change the total momentum of an isolated system

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• MCQmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  1. A particle of mass m with speed u makes an elastic 1D collision with identical stationary mass. Contact force rises linearly 0→F₀ in T/4, stays F₀ for T/2, then falls linearly to zero in T/4. F₀ is:

     

  Options

  • Option A

    $\mu$/T

  • Option B

    2mu/T

  • Option C

    4mu/(3T)

  • Option D

    3mu/(4T)

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• NumericmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  A ball of mass 2 kg strikes a smooth fixed vertical wall with speed 10 m/s. Its velocity makes an angle 60° with the normal to the wall. The collision is perfectly elastic. If the magnitude of the impulse delivered by the wall is N N·s, find N.

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• MCQeasyCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  A 10 g bullet leaves a gun barrel with speed 600 m s⁻¹. The impulse supplied to the gun is:

  Options

  • Option A

    12 N s

  • Option B

    6 N s

  • Option C

    3 N s

  • Option D

    36 N s

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• MCQmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  The force–time graph shown is in newtons versus microseconds. The total impulse from t = 4 μs to 16 μs is:

  

  Options

  • Option A

    5×10⁻² N s

  • Option B

    5×10⁻³ N s

  • Option C

    5×10⁻⁴ N s

  • Option D

    5×10⁻⁶ N s

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• MCQmediumCenter of maas , Momentum and CollisionImpulse & Impulse-Momentum Theorem

  An impulse I changes a particle velocity from v₁ to v₂. The kinetic energy gained by the particle is:

  Options

  • Option A

    $\frac12\overrightarrow{I.}\left(\overrightarrow{v}_1+\overrightarrow{v}_2\right)$

  • Option B

    $\frac12\overrightarrow{I.}\left(\overrightarrow{v}_1-\overrightarrow{v}_2\right)$

  • Option C

    $\overrightarrow{I.}\left(\overrightarrow{v}_1-\overrightarrow{v}_2\right)$

  • Option D

    $\overrightarrow{I.}\left(\overrightarrow{v}_1+\overrightarrow{v}_2\right)$

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