Consider two hockey pucks, each with mass 1.25 kg, on frictionless ice. Puck A is initially moving due east at 2.35 m/s towards puck B, which is initially stationary. The pucks collide head on. After the collision, puck B moves east with a speed of 1.45 m/s. (a) What is puck A's speed (in m/s) after collision? What direction is it moving in? (b) How much kinetic energy (in Joules) is lost from the system during the collision? (c) If the collision were completely elastic, what would the final speed and direction of each puck be?
Consider two hockey pucks, each with mass 1.25 kg, on frictionless ice. Puck A is initially moving due east at 2.35 m/s towards puck B, which is initially stationary. The pucks collide head on. After the collision, puck B moves east with a speed of 1.45 m/s. (a) What is puck A's speed (in m/s) after collision? What direction is it moving in? (b) How much kinetic energy (in Joules) is lost from the system during the collision? (c) If the collision were completely elastic, what would the final speed and direction of each puck be?
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Transcribed Image Text:Consider two hockey pucks, each with mass 1.25 kg, on frictionless ice. Puck A is
initially moving due east at 2.35 m/s towards puck B, which is initially stationary. The
pucks collide head on. After the collision, puck B moves east with a speed of 1.45 m/s.
(a) What is puck A's speed (in m/s) after collision? What direction is it moving in?
(b) How much kinetic energy (in Joules) is lost from the system during the
collision?
(c) If the collision were completely elastic, what would the final speed and
direction of each puck be?
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