Multiple choice question XI — task. Science CBSE, Class 9.

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1. In perfectly inelastic collisions, the relative velocity of the bodies:

before impact is zero
before impact is equal to that after impact
after impact is zero
is characterized by none of the above

2. A ball moving with a velocity collide elastically with another ball of equal mass, in a one-dimensional collision. Which of the following is not possible?

First ball will come to rest
Second ball will move with a velocity \(\vec{u_1}\)
Both balls will move with velocity \(\vec{u_1}\) after collision
The first ball will move with a velocity less than \(\vec{u_1}\)

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11. Multiple choice question XI

Exercise condition: