Elastic collisions Quiz 1

Question 1

The net loss of kinetic energy in a system during an elastic collision is

Accepted Answer

$$0$$

Answer

$$1$$

Answer

Greater than $$1$$

Answer

None of the above

Question 2

If two billiard balls collide, the first ball is in motion with a velocity $$v$$ and the second ball is at rest. What happens after the collision? $$(	ext{Assume masses of the balls are equal and an elastic collision takes place})$$

Accepted Answer

First ball is at rest and velocity of second ball is $$v$$

Answer

Both are at rest

Answer

Velocity of both first and second ball is $$\dfrac{v}{2}$$

Answer

None of the above

Question 3

The momentum of a system in an elastic and inelastic collision is,

Accepted Answer

Conserved in both

Answer

Conserved in elastic but not conserved in inelastic collision

Answer

Not conserved in elastic but conserved in inelastic collision

Answer

None of the above

Question 4

Two elastic bodies $$A$$ and $$B$$ collide with each other as shown in the figure below, masses as $$1$$ kg and $$1.5$$ kg and initial velocities as $$2$$ m/s and $$5$$ m/s, respectively. What are the final velocities after collision?<img  src="https://cmds-vedantu.s3.ap-southeast-1.amazonaws.com/prod/question-sets/b8d01cd4-79d8-4729-8d9e-dce39af877553148966624354559365.png"/>

Accepted Answer

$$1.6$$ m/s and $$1.8$$ m/s

Answer

$$2$$ m/s and $$8$$ m/s

Answer

$$0$$ m/s and $$1.8$$ m/s

Answer

$$2$$ m/s and $$0$$ m/s

Question 5

In elastic collision, the angle of scattering is independent of

Accepted Answer

Final velocity of the colliding bodies

Answer

Initial velocity of the colliding bodies

Answer

Masses of the colliding bodies

Answer

None of the above