Question

Two particles of mass 2 kg and 6 kg are moving on smooth horizontal surface collides
with each other. If velocity of their common centre of mass is 10 m/s before collision
then what will be the total linear momentum of system of particles after collision.
(Assume they move along the surface after collision)
64 kg m/s
49 kg m/s
80 kg m/s
Data insufficient

Answer 1

If two particles are involved in an elastic collision, the velocity of the second particle after collision can be expressed as: v2f=2⋅m1(m2+m1)v1i+(m2−m1)(m2+m1)v2i v 2 f = 2 ⋅ m 1 ( m 2 + m 1 ) v 1 i + ( m 2 − m 1 ) ( m 2 + m 1 ) v 2 i .

Two objects that have equal masses head toward each other at equal speeds and then stick together. The two objects come to rest after sticking together, conserving momentum but not kinetic energy after they collide. Some of the energy of motion gets converted to thermal energy, or heat.

Answer is Option a ✔️✔️

Answer 2

Answer:

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