Question

Two objects, each of mass 15 kg, are moving in the same straight line but in opposite. direction.The velocity of each object is 2.5ms-1 before the collision during which they stick together.What will be the velocity of the combined object after collision?​

Answer 1

Answer:

Two objects, each of mass 15 kg, are moving in the same straight line but in opposite. direction.The velocity of each object is 2.5ms-1 before the collision during which they stick together.What will be the velocity of the combined object after collision?

Answer 2

let their combined velocity be v

we know, m1=m2=15

v1=v2=2.5

as per law of conservation of momentum.,

m1v1 + m2v2 = (m1+m2) v

=> 2(15×2.5) = (30)v

=> v=2.5m/s