physics
posted by micha .
A billiard ball rolling across a table to the right at 2.2 m/s makes a headon elastic collision with an identical ball. The mass of a billiard ball is 32 g.
If the second ball is initially at rest, what is the velocity of the first ball after the collision?
If the second ball is initially at rest, what is the velocity of the second ball after the collision?
If the second ball is initially moving to the left with a velocity of 1.1 m/s, what is the velocity of the first ball after the collision?
If the second ball is initially moving to the left with a velocity of 1.1 m/s, what is the velocity of the second ball after the collision?
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