In: Physics
Two billiard balls are initially traveling toward each other at
speeds of 1.20 m/s for ball 1 and 4.65 m/s for ball 2. The balls
undergo an elastic, head-on collision. Find their final
velocities.
ball 1
magnitude | |
direction | ---Select--- in the same direction it was initially going. opposite the direction it was initially going. |
ball 2
magnitude | |
direction | ---Select--- in the same direction it was initially going. opposite the direction it was initially going. |
The two billiard balls have the same mass .
Initial velocity of ball 1 is ( going to the right)
Initial velocity of ball 2 is (going to left) ( negative sign indicates the ball 2 is moving in opposite direction to ball 1)
Conserving the momentum of two balls before and after collision,
--------(1)
The balls undergo elastic collision, coefficient of restitution
---(2)
Adding (1) and (2) (going to right) , (going to left)
Ball 1:
Magnitude of final velocity
Direction is Opposite the direction it was initially going.
Ball 2:
Magnitude of final velocity
Direction is Opposite the direction it was initially going.