[填空题]
Two billiard balls of equal mass und-bq ld w+cicq6sdc( )9)xprm0ergo a perfectly 63cicz*y p9m7dtt( rw elastic head-on collision. If one ball’s initial speed was 2m/s and the other’s was 3m/s in 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 t7w6ypmtr d 9zc*(c3i opposite direction. ) v'$_A$ = m/s v'$_B$ = m/s
