Question

Two objects each of mass 5 kg are moving in the same straight line towards each other with the same velocity of 3m/s. They stick to each other after collision. What will be the velocity of combined object after ?collision

Answer 1

Answer:

v = 0

Explanation:

Before collision,

m1=m2=5kg

u1=3m/s,u2=−3m/s

Total momentum before collision is

m1u1+m2u2=5×3+5×(−3)=0

After collision,

Let the velocity of the combined object be v.

Total momentum of the system after collision is

m1v+m2v=(m1+m2)v=(5+5)v=10v

After per law of conservation of momentum,

P initial=  P final

0 = 10v

v = 0

HOPE IT HELPED!