impuse and question based on it questions with solutions

Showing 1–10 of 21 questions

• Multi-correcteasyCenter of maas , Momentum and Collisionimpuse and question based on it

  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 Collisionimpuse and question based on it

  A 1 kg ball hits the floor vertically downward at 25 m s⁻¹ and rebounds upward at 10 m s⁻¹. Impulse on the ball is:

  Options

  • Option A

    35 kg m s⁻¹ downward

  • Option B

    35 kg m s⁻¹ upward

  • Option C

    30 kg m s⁻¹ downward

  • Option D

    30 kg m s⁻¹ upward

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• MCQmediumCenter of maas , Momentum and Collisionimpuse and question based on it

  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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• NumericmediumCenter of maas , Momentum and Collisionimpuse and question based on it

  A particle is acted upon by the time-dependent force F = (6t, 4) N from t = 0 to t = 2 s. If the magnitude of the impulse is 4√N N·s, find N.

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• NumericmediumCenter of maas , Momentum and Collisionimpuse and question based on it

  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 Collisionimpuse and question based on it

  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 Collisionimpuse and question based on it

  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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• MCQmediumCenter of maas , Momentum and Collisionimpuse and question based on it

  Two equal balls are dropped from height h. After collision with floor, one rises to h/4 and the other to h/16. If impulses from floor are I₁ and I₂, then:

  Options

  • Option A

    5I₁=6I₂

  • Option B

    6I₁=5I₂

  • Option C

    I₁=2I₂

  • Option D

    2I₁=I₂

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• MCQmediumCenter of maas , Momentum and Collisionimpuse and question based on it

  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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• NumericmediumCenter of maas , Momentum and Collisionimpuse and question based on it

  A particle of mass 2 kg moves with speed 5 m/s. An impulse changes the direction of its velocity through 120°, but its speed remains unchanged. If the magnitude of the impulse is 10√N N·s, find N.

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