Question

TWO OBJECTS EACH OF MASS 1.5 ARE MOVING IN THE SAME STRAIGHT LINE BUT IN OPPOSITE DIRECTION THE VELOCITY OF EACH IS 2.5 M)S BEFORE THE collision what will be the velocity of combined object after collision​

Answer 1

Answer:

v=0ms-1 is answer.

Explanation :-

Mass of two objects are equal but their motion it is in opposite direction.

That is

m1=m2= 1.5 kg,

initial velocity, u1 =2.5 ms-1 ,u2= -2.5ms-1.

Let v be the velocity of the combined object after the collision.

By conservation momentum,

Total momenta after collision = Total momenta before collision.

(m1 +m2)v= m1u1 + m2v2,

===>(1.5+1.5)v = 1.5 ×2.5+1.5×(-2.5)

===>3.0 v=0

So ,v = 0 ms-1.

Hence, the object will have zero velocity after collision.

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