Question

Tow ovject of masses 100g and 200 are moving along the same line and direction with velocities of 2 m/s and 1 m/s respectivel. They collide and after the coloision, to the first object moves at a velocity of 1.67m/s. Determine the velocity of the second object.

Answer 1

According to the law of conservation of momentum,

m1u1−m2u2=m1v1−m2v2

Then u can solve it...