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AIEEE 2010 Solved Paper

Section: Physics

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Question : 35 of 89

Marks: +1, -0

Statement - 1: Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.

-2

: Principle of conservation of momentum holds true for all kinds of collisions.

Statement - 1 is true, Statement - 2 is true; Statement - 2 is the correct explanation of Statement - 1
Statement $-1$ is true, Statement $-2$ is true; Statement - 2 is not the correct explanation of Statement - 1
Statement $-1$ is false, Statement $-2$ is true
Statement $-1$ is true, Statement - 2 is false

Solution:

In completely inelastic collision,

m_1 v_1+m_2 v_2=m_1 v+m_2 v

after collision both particle have common velocity

v

, so all energy is not lost

∴

Statement

-1

is true

The principle of conservation of momentum applicable for all kinds of collisions.

So statement

-2

is also true.

Statement - 2 explains statement - 1 correctly because applying the principle of conservation of momentum, we can get the common velocity and hence the kinetic energy of the combined body.

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