Hockey Puck Speed Slapshot
Projectile Motion Problem?
A hockey player hits a slapshot with the puck starting at ice level. The airborne puck misses the net and just clears the Plexigalss wall of height, h=2.8m. The time it takes for the puck to leave the hockey stick and clear the plexiglass wall is t=0.65s. The distance from the initial shot location to the plexiglass wall is x=120m. Find the initial speed of the puck. Find the magnitude and angle.
The equation of motion in the vertical dimension is
y = yo + voy t – 1/2 g t²
yo = 0
y = 2.8 m
voy is unknown
t = .65 s
g = 9.8 m/s²
The only unknown, voy, is 7.5 m/s.
The horizontal velocity is 120 m / .65 s = 185 m/s.
The initial speed and angle are thus 185 m/s at an angle of 2.3 degrees.
I’m thinking you have a typo. Hockey rinks aren’t 120 m long, and not many players have 400-mph slapshots. If that was supposed to be 12.0, just use the same technique as shown here.
Hockey Shots : Hockey Slap Shot Demo
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Snap Shot Ice Hockey $48.99 High Quality Content by WIKIPEDIA articles! A snap shot is a like an abbreviated Slapshot in ice hockey. The purpose of the snap shot is to combine the main advantages of the wrist shot. The snap shot is accomplished with a quick snap of the wrists while the puck rests in place. The difference between a snap shot and a wrist shot is that the hockey blade is accelerated towards the puck from a small distance behind it. This allows the player to flex the shaft on the ice and strike the puck at speed — although not to the degree of a full slap shot. The stick is usually not lifted higher than the knee during the shot, which makes this shot legal in most old-timer hockey leagues despite its rapid pace. Snap shots are the most common shot taken when the crease player receives the pass and decides not to one-time the puck. |
