Question

Question

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.
What is the final time
Responses

2:35 is the initial time.
2:35 is the initial time.

2:32 is the initial time.
2:32 is the initial time.

17⅔ m is the initial time.
17⅔ m is the initial time.

Answer 1

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

1. Distance: The puck traveled from the blue line of the green team to the blue line of the orange team, which is 17⅔ meters (or approximately 17.67 meters).

2. Time: The initial time was 2:35 and the puck stopped at 2:32. We need to convert these times into seconds to find the difference:

   • 2:35 = 2 minutes and 35 seconds = \( 2 \times 60 + 35 = 155 \) seconds
   • 2:32 = 2 minutes and 32 seconds = \( 2 \times 60 + 32 = 152 \) seconds

   The time difference (time taken for the puck to travel) is: \[ 155 , \text{seconds} - 152 , \text{seconds} = 3 , \text{seconds} \]

3. Speed Calculation: Speed is calculated as distance divided by time: \[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} = \frac{17.67 , \text{meters}}{3 , \text{seconds}} \approx 5.89 , \text{meters/second} \]

So, the speed of the hockey puck is approximately 5.89 meters/second.

Final Time

The final time when the puck was stopped is 2:32.