Two balls $A$ and $B$ having masses $1\, kg$ and $2\, kg$, moving with speeds $21\, m/s$ and $4\, m/s$ respectively in opposite direction, collide head on. After collision Amoves with a speed of $1\,m/s$ in the same direction, then correct statements is :
Two balls $A$ and $B$ having masses $1\, kg$ and $2\, kg$, moving with speeds $21\, m/s$ and $4\, m/s$ respectively in opposite direction, collide head on. After collision Amoves with a speed of $1\,m/s$ in the same direction, then correct statements is :
- A
The velocity of $B$ after collision is $6\,m/s$ opposite to its direction of motion before collision.
- B
The coefficient of restitution is $0.2.$
- C
The loss of kinetic energy due to collision is $200 J.$
- D
All of the above
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- [JEE MAIN 2023]