Question

Two balls A and B of masses $m$ and $2m$ are in motion with velocities $2v$ and $v$ respectively. What is the ratio of their momentum ?

• A. 1:2
• B. 2:1
• C. 1:1
• D. 4:1

Answer 1

The correct option is C 1:1

(i) Inertia depends on mass, and since the mass of the two balls are $m$ and $2m$, So the ratio of inertia of the balls $1:2$
(ii)Momentum , $p=mv$
So, as per momentum equation, it depends on both mass and velocity.
So, their ratio $=m\times 2v:2m\times v=1:1$