First slide

Special cases

Question

Consider the following statements 'A' and 'B' and identify the correct answer.
A : In an elastic collision, if a body suffers a head on collision with another of same mass at rest, the first body comes to rest while other starts moving with the velocity of first one.
B : Two bodies of equal masses suffering a head on elastic collision exchange their velocities.

Moderate

A

Both A and B are true
B

Both A and B are false
C

A is true but B is false
D

A is false but B is true

Solution

mv₁ + mv₂ = mu₁ + mu₂
⇒ v₁ + v₂ = u₁ + u₂ ......(1)
$\large \frac {v_2-v_1}{u_1-u_2}=e=1$
⇒ v₂ - v₁ = u₁ - u₂........(2)
solving, v₁ = u₂ and v₂ = u₁

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App