Q13 of 119 Page 157

A body at rest breaks into two pieces of equal masses. The parts will move

As no external forces are applied, hence conservation of linear momentum must be valid.


m1=m2, implies, v1=-v2. So, they are n opposite direction but having equal speeds.

More from this chapter

All 119 →
11

A body falling vertically downwards under gravity breaks in two parts of unequal masses. The centre of mass of the two parts taken together shifts horizontally towards

 12

A ball kept in a closed box moves in the box making collisions with the walls. The box is kept on a smooth surface. The velocity of the centre of mass

 14

A heavy ring of mass m is damped on the periphery of a light circular disc. A small particle having equal mass is clamped at the centre of the disc. The system is rotated in such a way that the centre moves in a circle of radius r with a uniform speed υ. We conclude that an external force

 15

The quantities remaining constant in a collision are