Project Description Cricket?
In our Physics of Sports Videos, we were supposed to pick a sport and an action in the sport such as hitting a baseball, and explain the physics behind it. My group chose the international sport cricket and explained the physics behind hitting the ball. We chose the sport cricket because it is not well known to America and we wanted to teach them about this fun sport. We had about two weeks to write a script, make a storyboard, and construct the video. Cricket has not been done yet as a Physics of Sports Video so we felt better knowing that we have done something that no group has done before. The three physical components we calculated were the vertical velocity, horizontal velocity, and the force exerted on the ball and the bat. We have produced a video that includes all these components.
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For those of you who don't know what cricket it is, it is a sport played in Europe, Australia, India, and many more countries. Cricket is a bat-and-ball game played between two teams of eleven players on a cricket field, at the center of which is a rectangular 22-yard-long pitch with a wicket (a set of three wooden stumps) sited at each end. The aim of Cricket is to score more 'Runs' than the other team. Runs are got by batsmen running between The wickets after a ball has been bowled, or hitting the ball over the boundary, or by the umpires penalizing the bowling side for bowling an illegal ball. If the batsman misses the ball and it hits the wicket it is called bowled.
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Concepts
There were a few key concepts involved in the making of this video, they were:
Horizontal Velocity: The change in distance (horizontal) divided by the change in time. The rate of distance covered in a specific amount of time. We calculated the horizontal velocity of the ball accelerating after it was hit by the bat. The horizontal velocity of the ball was 40 m/s when it was hit.
Vertical Velocity: The vertical velocity is how much velocity an object has vertically. You find this by multiplying the amount of time it took to hit the ground by the acceleration due to gravity. The vertical velocity of the ball was also 40 m/s.
Total Velocity: The amount of velocity the object had in total. It is simple to calculate. All you must do is use the Pythagorean Theorem to find the hypotenuse of your horizontal and vertical velocity (called vectors) triangle, which is your total velocity. In our case, our total velocity for the cricket ball was 56.5 m/s.
Momentum: This is the tendency of objects staying in motion. The equation for momentum is p=mv. The ball had momentum when it was hit but it slowed down due to air resistance and gravity and it slowed down on the ground due to friction.
Impulse: How long an object is impacted.The equation used to find this is J=Ft. The equation is also equal to that of momentum. The unit of measure for impulse is newton seconds (Ns). The impulse of the ball was 6.1675 Ns.
Force: Force is the push or pull upon an object resulting from the object's interaction with another object. The force of the bat on the ball was 740 N. We calculated this by freezing the video and looking at the impact of the ball on the bat. 740 N is almost the same as 166 pounds resulted in the ball going 26 meters.
Reflection
In my opinion, this project went really well because our group was all on the same page. I think overall I did well contributing to our project. I taught my group how to play the sport of cricket. It was not easy at first, but my group seemed to catch onto it quickly, and they turned out to be naturals. I also helped in filming, doing a voice over, and editing. I also learned that teaching a sport is a lot harder than it sounds or looks from learning to set your hips right, to actually hitting the ball. I also learned to edit clips on iMovie. If I was able to do this project over again I would change the editing software because iMovie was a little confusing, and didn't have all the tools we needed to produce an amazing project. Two of our peaks were when everyone got a chance to hit the ball accurately for our video. Another peak was when our group figured out our script for the voice over. One of our pits was when we couldn't figure out how to work our editing software to finish our video. Overall this project went very well, and my entire group learned something new!