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In international play hockey puck is struck by a "green team" hockey player at the blue line with 2:35 on the clock. It is stopped by an "orange team" player at the opposite blue line with 2:32 on the clock. On an international hockey rink the blue lines are 17⅔ m apart. Calculate the speed of the hockey puck.

1 answer

To calculate the speed of the hockey puck, we need to determine the distance it traveled and the time it took to travel that distance.

  1. Distance: The distance between the two blue lines is given as 17⅔ meters. This can be converted to a decimal: \[ 17 \frac{2}{3} = 17 + \frac{2}{3} = 17 + 0.6667 \approx 17.6667 \text{ meters} \]

  2. Time: The puck was struck at 2:35 and was stopped at 2:32. Therefore, the time it took for the puck to travel from the blue line to the other blue line is: \[ 2:35 - 2:32 = 3 \text{ seconds} \]

  3. Calculating Speed: Speed is calculated using the formula: \[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \] Substituting in our values: \[ \text{Speed} = \frac{17.6667 \text{ m}}{3 \text{ s}} \approx 5.8889 \text{ m/s} \]

Thus, the speed of the hockey puck is approximately 5.89 m/s.