Water+Polo+Shot

Names: Camilla and Delaney

Title: Water Polo Shot

Lab Goal/Question: What are the parameters behind a water polo shot?

Procedure:

Part 1: Video of Water Polo Shot

media type="youtube" key="ge5pHjGwZ-I" width="436" height="361" media type="youtube" key="OvQqr7-eq6E  " width="425" height="350"
 * 2 meter shot **
 * 6 meter shot **


 * Materials: Video camera, meter stick, Logger pro, water polo ball. **


 * ﻿ 1. Film a person making a water polo shot from the 2 meter line using the video camera. **
 * 2. Film the same person making a water polo shot from 6 meters away from the goal using a video camera. **
 * 3. Using a meter stick, measure the height of the goal post above water. Record this data. **
 * 4. Record the mass of the water polo ball and convert it into kilograms. **
 * 5. Upload the first video to Logger pro. **
 * 6. Make points by following the motion of the ball until it hits the back of the goal. **
 * 7. Set a scale by labeling from the top of the goal post to the spot where it touches the water the distance that you measured in part 3… (Should be 1 meter). **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">8. Create a calculated column with both x and y-velocities so that you can find the acceleration of the water polo ball. Go to data and click on new calculated column **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">9. Once you have clicked new calculated column, for name put in "x-velocity and y-velocity", **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">for short name put "velocity", for units put "m/s", and for the equation put " Sqrt("X Velocity"^2+"Y Velocity"^2)". Click done. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">10. Now go to insert and click on graph. Click on "velocity". **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">11. Find the acceleration of the ball by pressing the examine button, then highlighting the point at which the ball was thrown to the point at which the ball hit he goal. Click the "x=" button and examine the slope. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">12. Record the slope as your acceleration in your data table. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">13. Using the equation Fnet= mass * acceleration, find Fnet by multiplying the mass of the water polo ball by the acceleration you found in step 11. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">14. Record this answer in your data table. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">15. Repeat steps 5-14 using the second video. **

<span style="color: #0000ff; font-family: 'Times New Roman',Times,serif; font-size: 130%;">Part 2: Water polo shot simulation
 * __//<span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">﻿ //__**


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Materials: Projectile launcher, 5 meter sticks, marble **


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Procedure: **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Part A **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1. First, set the projectile launcher down on a level surface (preferably on the floor). **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2. Set the angle on the launcher to 50 degrees **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3. Place a regular marble in the launcher on the first setting. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">4. Lay out the meter sticks from tip to tip in front of the projectile launcher and make sure to line up the first meter stick according to the place marked on the launcher where the ball is at (1st level). **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">5. Have your partner stand near the meter sticks and watch to see where the marble will land. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">6. Pull on the string on the projectile launcher. Have your partner mark where the ball lands and record this in your data as trial one. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">7. Repeat the procedure and this time call it trial 2. Do this for angles: 50, 40, 30, 20 and 10. **


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Part B **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1. Repeat the same procedure as above, doing 2 trials of each angle, except do these trials with the marble set on the third setting to maximize the force exerted on the ball. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2. Record your data in your data table. **

Data/ Calculations:


 * __//<span style="color: #0000ff; font-family: 'Times New Roman',Times,serif; font-size: 110%;">Part 1: Video of Water Polo Shot //__**


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Mass of water polo ball = 425 grams. **


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">acceleration of distance 1: 6.889 m/s/s **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">acceleration of distance 2: 7.265 m/s/s **


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Force of 2 meter shot... **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Fnet =mass * acceleration **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Fnet=425 * 6.889 **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">2927.83 N **


 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">force of 6 meter shot **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Fnet=mass * acceleration **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Fnet= 425 * 7.265 **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Fnet= 3087.63 N **


 * //__<span style="color: #0000ff; font-family: 'Times New Roman',Times,serif; font-size: 110%;">Part 2: Water Polo Shot Simulation __//**
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Degrees || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Distance marble went (meters) on first force level T1 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Distance marble went (meters) on first force level T2 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Distance marble went (meters) on third force level T2 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">Distance marble went (meters) on third force level T2 ||
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">10 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">.88 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">.85 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.9 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.85 ||
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">20 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.2 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.15 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3.0 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3.0 ||
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">30 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.4 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.4 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3.8 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">3.8 ||
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">40 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.5 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.5 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">4.0 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">4.0 ||
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">50 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.6 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">1.6 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">4.5 || <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">4.45 ||

Conclusion:
 * <span style="color: #0000ff; font-family: 'Times New Roman',Times,serif; font-size: 110%;">Part 1 **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">We observed that the acceleration of the water polo ball in part 1 was smaller than the acceleration in part 2. Since the mass of the water polo ball stayed constant, the force of the second shot was greater than the first because force is iversely related to mass and acceleration. It makes sense that the force was greater in the second shot (6 meters) because Camilla had to throw the ball a greater distance in order to make the shot. **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 110%;">A water polo player that wants to take a shot from 2 meters should exert about 2927.83 Newtons of force in order to make the shot forceful. A water polo player that is going to take a shot from the 6 meter line should exert around 3087.63 Newtons of force in order to make the ball get into the goal. **
 * <span style="color: #0000ff; font-family: 'Times New Roman',Times,serif; font-size: 110%;">Part 2 **
 * <span style="color: #000000; font-family: 'Times New Roman',Times,serif; font-size: 110%;">Looking at our data table it is evident that the distance the marble goes increases as the degree of the shot increases. In the first 2 trials, as the measure of the angle increases, the distance the marble minorly increases. In part 2, as the measure of the angle increases, the distance the marble goes increases much more dramatically than the distance the marble covered in part 1. It is clear that increasing the force that the marble is launched at also increases the distance, as shown by the data above. All of the data under the third setting with the most force is larger than the data under the 1st setting. The closer you are to the goal, let’s say the 2 meter line, then the smaller the degree needs to be to make a shot because you have less distance between yourself and the goal. If you use a lot of force to make a shot, then you will not need to be as close to the goal because the more force you use, the greater the distance the ball travels. If you want to make a shot from the five meter line, then you will need to increase the angle of your arm. Let’s say that there is no defender on you and you have the option of either swimming closer to the goal or taking a shot. If you do not want to exert a large amount of force, then swim closer to the goal and take your shot because the closer you are to the goal and decrease the amount of distance for the shot, the less amount of force you will need to exert. Remember to increase the angle to make up for a lack of force. If you want to make a really forceful shot, then swim closer and exert maximum force with a small angle. **