Physics of Sports Video
This is the second project I have done in the STEM program. The task for this video was to make a video about a cerain action or movement and show the watchers how to perform this actiton and the physics behind each step. This physics of sports video was made by Cias Wang, Abby Bergerson, Chloe Obert, and I. The sport we chose for our video was volleyball. The movement we chose the spike.
In this video we show the viewers get a step by step process on how to perform a volleyball spike with additional physics. Our full video is shown at the bottom of the page and for the details in the making of our video please look below.
In this video we show the viewers get a step by step process on how to perform a volleyball spike with additional physics. Our full video is shown at the bottom of the page and for the details in the making of our video please look below.
Calculations and Concepts
To help the viewer understand how to do a spike we thoroughly explained the foot work, handwork,and put it all together with some physics and calculations along the way. The concepts we used were momentum, force, vectors which help determine the placement and velocity of the ball, and trigonometry to determine the angle at which the ball should be hit at. To see detail in each of these concepts please look below.
Momentum- The tendency of objects to keep moving( How hard it would be to stop).
- equation- p(momentum)=m(mass) X v(velocity)
- In our video we used momentum to explain that when you jump to hit the ball you have to get momentum by swinging your arms back and forth. By doing this you get the maximum height when you jump.
- equation used- m(mass) X v(velocity)=F(force) X t(time)
- This equation helped us figure out that the force that you need to hit the ball with is 60.5 Newtons with is equal to about 14 pounds.
mv=Ft
(o.24kg)(12.6m/s)= F(0.05s)
F= 60.5N ~ 14lbs
(o.24kg)(12.6m/s)= F(0.05s)
F= 60.5N ~ 14lbs
Vectors and trigonometry- we used these to find the velocity, placement of the ball, and the angle at which you want to hit the ball.
- velocity- rate of covered distance in a direction.
- To find where you want to hit the and how long the path of the ball should be we used trigonometry. We used the Pythagorean Theorem. We found out that you want to aim the ball at the middle of the court which is 4.5m from the net. The length of the path of the ball from when it leaves your hand to when it hits the floor is 5m.
a^2 + b^2= c^2
(2.25m)^2 + (4.5m)^2=c^2
c= 5m
(2.25m)^2 + (4.5m)^2=c^2
c= 5m
- To find the angle at which you need to hit the ball we used trigonometry and we found that the angle at which you need to hit the ball is a 27 degree angle.
sin(0)= opposite leg/ adjacent leg
sin(0)= 2.25m/5m
0=sin^-1(2.25m/5m)
0= 27 degrees
sin(0)= 2.25m/5m
0=sin^-1(2.25m/5m)
0= 27 degrees