Question

Ice hockey star Bruce Blades is 5.0 m from the blue line and gliding toward it at a speed of 4.0 m/s. You are 20 m from the blue line, directly behind Bruce. You want to pass the puck to Bruce. With what speed should you shoot the puck down the ice so that it reaches Bruce exactly as he crosses the blue line?

Answer 1

Answer:20 m/s

Explanation:

Given

Bruce is 5 m from blue line

bruce speed=4 m/s

Another player is 20 m from blue line 20 m

Let speed of buck be u

Distance =20+5=25 m

Time taken by bruce to reach blue line$=\frac{5}{4}=1.25 s$

Therefore speed of buck should be

$u=\frac{25}{1.25}=20 m/s$