Two objects each of mass 1.5kg are moving in the same straight line but in opposite direction.The velocity of each object 2m/s before the collision during which they stick together?What will be the velocity of the combined object after collision?
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Let the objects be A and B moving from opposite directions in the same straight line.
∴ Initial momentum of A =m×v
=1.5×2=3 kgms ^−1
Also, initial momentum of B
=m×v=1.5×(−2)=−3 kgms ^−1
If v is the velocity of the objects after collision, then final momentum after collision =3×v
Using the law of conservation of momentum, final momentum of A and B =
initial momentum of A + initial momentum of B
or 3×v=3 −3
or 3×v=0 or v=0
∴ Initial momentum of A =m×v
=1.5×2=3 kgms ^−1
Also, initial momentum of B
=m×v=1.5×(−2)=−3 kgms ^−1
If v is the velocity of the objects after collision, then final momentum after collision =3×v
Using the law of conservation of momentum, final momentum of A and B =
initial momentum of A + initial momentum of B
or 3×v=3 −3
or 3×v=0 or v=0
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