Two objects of masses 100g and 200g are moving along the same line and direction with
velocities of 2 m/s and 1 m/s respectively. they collide and after the collision, the first object
moves at a velocity of 0.5 m/s. determine the velocity of second object. answer with explanation

1.75 m/s

Explanation:

Momentum is conserved:

m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂

(100 g) (2 m/s) + (200 g) (1 m/s) = (100 g) (0.5 m/s) + (200 g) v₂

2 m/s + (2) (1 m/s) = 0.5 m/s + 2 v₂

4 m/s = 0.5 m/s + 2 v₂

3.5 m/s = 2 v₂

v₂ = 1.75 m/s

are their multiple choices ?

explanation:

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