An object of mass $M_1$ moving horizontally with speed $u$ collides elastically with another object of mass $M_2$ at rest. Select correct statement.
An object of mass $M_1$ moving horizontally with speed $u$ collides elastically with another object of mass $M_2$ at rest. Select correct statement.
- A
The momentum of system is conserved only in direction $P Q$
- B
Momentum of $M_1$ is conserved in direction perpendicular to $S R$
- C
Momentum of $M _2$ will change in direction normal to $CR$
- D
All of these
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