Two billiard balls having the same mass and speed roll toward each other. What is their combined momentum after they meet?
A. zero
B. half the sum of their original momentums
C. twice the sum of their original momentums
D. need more information
Answer:A
Two billiard balls having the same mass and speed roll toward each other. What is their combined momentum after they meet?
A. zero B. half the sum of their original momentums C. twice the sum of their original momentums D. need more information