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I have a doubt, kindly clarify. A 4.00 kg ball is traveling at 5.00 m/s and strikes a wall. The 4.00 kg ball bounces off the wall with a velocity of 4.0 m/s. The change in momentum of the ball is

A 4.00 kg ball is traveling at 5.00 m/s and strikes a wall. The 4.00 kg ball bounces off the wall with a velocity of 4.0 m/s. The change in momentum of the ball is
 

  • Option 1)

    8.0 kg m/s.

  • Option 2)

    13 kg m/s.

  • Option 3)

    26 kg m/s

  • Option 4)

    36 kg m/s.

 
Answers (1)
355 Views

 

Coffecient of Restitution (e) -

e= \frac{v_{2}-v_{1}}{u_{2}-u_{1}}

- wherein

Ratio of relative velocity after collision to relative velocity before collision.

 

 \vec{\Delta }P= \vec{P}_{f}-\vec{P}_{i}= 20 + 16 = 36 kgms^{-1}

 


Option 1)

8.0 kg m/s.

This option is incorrect

Option 2)

13 kg m/s.

This option is incorrect

Option 3)

26 kg m/s

This option is incorrect

Option 4)

36 kg m/s.

This option is correct

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