A 20.6 g marble sliding to the right at 59.6 cm/s overtakes and collides elastically with a 10.3 g marble moving in the same direction at 14.9 cm/s. After the collision, the 10.3 g marble moves to the right at 74.5 cm/s. Find the velocity of the 20.6 g marble after the collision.

29.8 cm/s

Explanation:

Given

mass of marble A is

Initial velocity of marble A is

mass of marble B is

Initial velocity of marble B

After collision marble B moves with velocity of

Conserving momentum

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle