Hockey+Shots

__**Names:**__ Tyler and Mike

__**Title:**__ Hockey Shots __**Lab goal/question:**__ Evaluate the physics involved in each of the four hockey shots; wrist, snap, slap, and backhand.

__**Procedure:**__
 * 1) Go to hockey rink with camera
 * 2) Set up ruler and camera
 * 3) Perform and take video of each shot: backhand, wrist, snap, slap.
 * 4) Add videos to logger pro and examine them.
 * 5) Find Velocity and Accleration.
 * 6) Convert ft per second to miles per hour.
 * 7) Solve for total change in energy in Joules.
 * 8) Add videos, graphs, and calculations to wiki.

__**Data/calculations:**__

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__**-Backhand**__
Velocity- 35 MPH Acceleration- 183 MPH^2 Change in Energy- 221.1 J TME=KE+PE TME=.5*.17*50.6^2+.17*9.8*2.1

Velocity- 40 MPH
Acceleration- 231 MPH^2 Change in Energy- 229.5 J TME=PE+KE TME=.5*.17*51.7^2+.17*9.8*1.4

Velocity- 42 MPH
Accleration- 305 MPH^2 Change in Energy- 317.3 J TME=PE=KE TME=.5*.17*61^2+.17*9.8*.6

Velocity- 40 MPH
Accleration- 263 MPH^2 Change in Energy- 289.4 J TME=PE+KE TME=.5*.17*58.3^2=.17*9.8*.3

__**Conclusion:**__

 * We were successfully able to evaluate the physics involved in the hockey shot. Taking videos of us shooting may have been the hardest part because the puck is hard to see when it is moving that fast, but once we had good videos and transfered them into logger pro they were very easy to analyze. It told us the velocity and acceleration and from there we found the change in energy of the puck from beginning to end. As is shown in the data the backhand is the slowest shot, followed by slap and wrist at the same, and snap being the fastest. This was a little puzzling to us. We knew the backhand should be the slowest, but we thought the slap shot would be the fastest. This might have to do with the fact that we did not have skates on, so it was harder to stay balanced while shifting your weight. Otherwise, our predictions about the shots have all been accurate. We think that the data we collected on all the shots is good and that the only reason for error might have been that we did not skate on skates.**