Two objects of equal mass hit a wall with the same velocity. They both rebound with the same velocity. Both objects experience the same momentum change but one experiences twice the force as the other. Which of the following statements is true?

  • Option 1)

    the contact time between the object and the wall of one is twice the contact time of the other

  • Option 2)

    the contact time between the object and the wall of one is equal to the contact time of the other

  • Option 3)

    the contact time between the object and the wall of one is one-half the contact time of the other

  • Option 4)

    the change in the kinetic energy is the same for the two objects.

 

Answers (1)
V Vakul

As we learnt in

Perfectly Elastic Collision -

e=1

- wherein

e\: :\: coefficient \: of\: restitution

 

The contact time between the object and the wall of one is twice the contact time of other. 

 


Option 1)

the contact time between the object and the wall of one is twice the contact time of the other

Correct

Option 2)

the contact time between the object and the wall of one is equal to the contact time of the other

Incorrect

Option 3)

the contact time between the object and the wall of one is one-half the contact time of the other

Incorrect

Option 4)

the change in the kinetic energy is the same for the two objects.

Incorrect

Preparation Products

Knockout BITSAT 2021

It is an exhaustive preparation module made exclusively for cracking BITSAT..

₹ 4999/- ₹ 2999/-
Buy Now
Knockout BITSAT-JEE Main 2021

An exhaustive E-learning program for the complete preparation of JEE Main and Bitsat.

₹ 27999/- ₹ 16999/-
Buy Now
Exams
Articles
Questions