ASK YOUR TEACHER

PRACTICE ANOTHER

A $60\mathrm{.}0$ kg ice hockey goalie, originally at rest, catches a $0\mathrm{.}150$ kg hockey puck slapped at him at a velocity of $37\mathrm{.}0\frac{m}{s}.$ Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would their final velocities $($in $\frac{m}{s})$ be in this case? $($Assume the original direction of the ice puck toward the goalie is in the positive direction. Indicate the direction with the sign of your answer.$)$

puck $]\frac{m}{s}$

goalie $]\frac{m}{s}$