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.

Question

What is the time?
Responses

2:32 - 2:35 is -3 second. That is the time.
2:32 - 2:35 is -3 second. That is the time.

2:32 - 2:35 is 3 seconds. That is the time.
2:32 - 2:35 is 3 seconds. That is the time.

2:32 - 2:35 is -3 second, but time does not flow backwards so 3 seconds is the time.
2:32 - 2:35 is -3 second, but time does not flow backwards so 3 seconds is the time.

Answer 1

To calculate the speed of the hockey puck, first determine the time it took for the puck to travel from the green team player at the blue line to the orange team player at the opposite blue line.

The puck was struck at 2:35 and was stopped at 2:32. To find the time taken, we calculate:

2:32 - 2:35 = -3 seconds

Since time does not flow backward, the time taken for the puck to travel is actually 3 seconds.

Now, we know that the blue lines are 17⅔ meters (or \(17.67\) meters) apart, and we can use the formula for speed:

\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]

Plugging in the values:

\[ \text{Speed} = \frac{17.67 \text{ m}}{3 \text{ s}} \approx 5.89 \text{ m/s} \]

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

In summary, the time taken for the puck to travel between the two blue lines is 3 seconds.