Two bodies $$A$$ and $$B$$ of same mass undergo completely inelastic one dimensional collision. The body $$A$$ moves with velocity $$v_1$$ while body $$B$$ is at rest before collision. The velocity of the system after collision is $$v_2$$. The ratio $$v_1:v_2$$ is:
1. $$2:1$$
2. $$4:1$$
3. $$1:4$$
4. $$1:2$$
Subtopic: Â Collisions |
Â 66%
From NCERT
NEET - 2024
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A bullet of mass $$m$$ hits a block of mass $$M$$ elastically. The transfer of energy is the maximum, when:
1. $$M=m$$
2. $$M=2m$$
3. $$M\ll m$$
4. $$M\gg m$$
Subtopic: Â Collisions |
Â 53%
From NCERT
NEET - 2023
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A particle of mass $$4M$$ kg at rest splits into two particles of mass $$M$$ and $$3M.$$ The ratio of the kinetic energies of mass $$M$$ and $$3M$$ would be:

 1 $$3:1$$ 2 $$1:4$$ 3 $$1:1$$ 4 $$1:3$$
Subtopic: Â Collisions |
Â 63%
From NCERT
NEET - 2022
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Given below are two statements:
 Assertion (A): When a firecracker (rocket) explodes in mid-air, its fragments fly in such a way that they continue moving in the same path, which the firecracker would have followed, had it not exploded. Reason (R): Explosion of cracker (rocket) occurs due to internal forces only and no external force acts for this explosion.

 1 Both (A) and (R) are true and (R) is the correct explanation of (A). 2 Both (A) and (R) are true but (R) is not the correct explanation of (A). 3 (A) is true but (R) is false. 4 (A) is false but (R) is true.
Subtopic: Â Collisions |
From NCERT
NEET - 2022
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Body $$\mathrm{A}$$ of mass $$4m$$ moving with speed $$u$$ collides with another body $$\mathrm{B}$$ of mass $$2m$$ at rest. The collision is head-on and elastic in nature. After the collision, the fraction of energy lost by the colliding body $$\mathrm{A}$$ is:
1. $$\frac{5}{9}$$
2. $$\frac{1}{9}$$
3. $$\frac{8}{9}$$
4. $$\frac{4}{9}$$

Subtopic: Â Collisions |
Â 64%
From NCERT
NEET - 2019
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