[填空题]
A 0.450-kg ice puck, 9t8y0s mf 9pjovm4f5ym1 remu5jms y.-y 5 6cqmoving east with a speed of 3m/s has a head-on collision with a 0c5fej s.-m4yumqym16m5 y5 rv .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
