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## Two objects of masses 100 g and 200 g are moving along the same line and direction with velocities of 2 m s-1 and 1 m s-1, respectively. They collide and after the collision, the first object moves at a velocity of 1.67 m s-1. Determine the velocity of the second object. - Physics Cbse class 11

##### Two objects of masses 100 g and 200 g are moving along the same line and direction with velocities of 2 m s-1 and 1 m s-1, respectively. They collide and after the collision, the first object moves at a velocity of 1.67 m s-1. Determine the velocity of the second object.

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Mass of first object, m1 = 100 g = 0.1 kg

Mass of second object, m2 = 200 g = 0.2 kg

Velocity of first object before collision, v1 = 2 m/s

Velocity of second object before collision, v2 = 1 m/s

Velocity of first object after collision, v3 = 1.67 m/s

Velocity of second object after collision = v4

According to the law of conservation of momentum:

Concept Note:- Total momentum before collision = Total momentum after collision

Hence, the velocity of the second object becomes 1.165 m/s after the collision.

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