Question

Two perfectly elastic particles P and Q of
equal mass travelling along the line joining
them with velocities 15 m/sec and 10 m/sec.
After collision, their velocities respectively
(in m/sec) will be​

Answer 1

Answer:

m1u1+m2u2=(M1+m2)v

Explanation:

let take mass =2kg

then 2×15+2×10=(15+10)v

30+20=25v

50=25v

50÷25=v

v=2m/sec

Answer 2

Answer:

Since the collision is elastic and both particles have same mass so, their velocities will be exchanged.