Question

During an ice hockey game, George had two shots on goal: one shot from 5m away at 10m/s and one shot from 10m away at 40m/s. Which shot did the goalie have a better chance of blocking?

Answer 1

Answer: First shot

Explanation:

A) Distance of puck from goal during the first shot = 5m away

Speed of puck during first shot = 10m/s

Time taken to score = ?

Since speed is the distance covered per unit time

i.e speed = Distance / time taken

Time taken = Distance / Speed

Time taken = 5m / 10m/s

= 0.5 seconds

B) Distance of puck from goal during the second shot = 10m away

Speed of puck during second shot = 40m/s

Time taken to score = ?

Recall that time taken = (Distance / Speed)

Time taken = 10m / 40m/s

= 0.25 seconds

It will take 0.5 seconds for the first shot to score whereas it will takes 0.25 seconds for the second shot to score.

Thus, the goalie have a better chance of blocking the first shot since it is slower than the second.