[填空题]
Two billiard balls of equal mzzu8r .1hmy2 kass undergo a-8gc4 axyy1jl8vj)vpz/:d t m perfectly elastic head-on collision. If one ball’s initial speed was 2m/s and the other’s was 3m/s inymyajj8z t )g18/v:lpx dv 4-c the opposite direction, what will be their speeds after the collision?(Let A represent the ball moving at 2.00 m/s, and call that direction the positive direction.Let B represent the ball moving at 3.00 m/s in the opposite direction. ) v'$_A$ = m/s v'$_B$ = m/s
