Question

A 105 kg ice hockey goalie, originally at rest, catches a 0.150 kg hockey puck slapped at him at a velocity of 27.7 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. Take the puck's initial moving direction as positive.

(a) What is the puck's final velocity (in m/s)? (keep 2 decimal places)

(b) What is the goalie's final velocity (in m/s)? (keep 3 decimal places)

(c) To verify this is indeed an ELATIC collision, Calculate the total kinetic energy of puck + goalie before the collision. (keep 2 decimal places)

Calculate the total kinetic energy of puck + goalie after the collision. (keep 2 decimal places)

Answer 1

Problem can be solve as below,