[填空题]
A 0.450-kg ice puck, 7 g-qvwoh-tnmm8agc h4 -ie+5z hsmz-r 2b)mid ,oz9,moving east with a speed of 3m/s has a head-on collision with a9id2hm rz-o ,zm,zsb) 0.900-kg puck initially at rest. Assuming a perfectly elastic collision, what will be the speed and direction of each object after the collision?Let A represent the 0.450-kg puck, and let B represent the 0.900-kg puck. v'$_A$ = m/s v'$_B$ = m/s