Physics 20 Water Park WEM
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1 Physics 20 Water Park WEM Page 1 of 8 Group Members: SKY SCREAMER Materials Needed: Stopwatch Data: Maximum Height: Length Pool: Depth Width Length Your mass: Time to reach the bottom: 23.7 m m 1.45 m 13.1 m 19.0 m kg s Observations: List the sensations at the following points in the slide. Use words like no friction, some friction, and lots of friction. 1. At the beginning of the descend: 2. At about half way down: 3. At the bottom of the slide: 4. Why is the slide curved?
2 Page 2 of 8 5. Why are the sides of the slide high? 6. If you had a gravity meter, what part of the trip would read as zero? 7. Where would your gravity meter show its maximum reading? 8. Why is it at a maximum at that point? Calculations: 1. Calculate your time, if you dropped straight down from the maximum height of the slide. (Show your work) D = v it +.5gt 2 2. Compare the calculated time to the time you measured. What is the difference and why? 3. How would you calculate the force of friction? List the steps necessary to determine the force of friction. 4. What kind of friction do you have, static or kinetic? 5. During the descent, where do you have the least coefficient of friction? Where is it the greatest? 6. Calculate the final velocity, if you fell straight down from the top of the slide. V f = v i + gt
3 7. What do you think is your final velocity at the bottom of the slide? Can you calculate it? Explain how. Page 3 of 8 EXTENSION 8. What is your potential energy at the top of the slide? E p = mgh 9. What is your kinetic energy at the bottom of the slide? E k =.5mv What is the work done by the force of friction? 11. What would be the average force of friction?
4 Page 4 of 8 Twister Materials Needed: Stopwatch Data: Maximum Height: Length Pool: Depth Width Length Your mass: Time to reach the bottom: 24.9 m m 1.2 m 7.7 m 13.1 m kg s Observations: List the sensations at the following points in the slide. Use words like no friction, some friction, and lots of friction. 9. At the beginning of the descend: 10. At about half way down: 11. At the bottom of the slide: 12. What do you feel during the turns? 13. Why are the sides of the slide so high? 14. Why do you move high along the side when you turn?
5 Page 5 of 8 Calculations: 12. Calculate your time, if you dropped straight down from the maximum height of the slide. (Show your work) D = v it +.5gt Compare the calculated time to the time you measured. What is the difference and why? 14. How would you calculate the force of friction? List the steps necessary to determine the force of friction. 15. What kind of friction do you have, static or kinetic? 16. During the descent, where do you have the least coefficient of friction? Where is it the greatest? 17. Calculate the final velocity, if you fell straight down from the top of the slide. V f = v i + gt 18. What do you think is your final velocity at the bottom of the slide? Can you calculate it? Explain how. EXTENSION 19. What is your potential energy at the top of the slide? E p = mgh 20. What is your kinetic energy at the bottom of the slide? E k =.5mv 2
6 Page 6 of What is the work done by the force of friction? 22. What would be the average force of friction? 23. As you go round and round in the twister, what is your centripetal force? F c = mv 2 /r
7 Page 7 of 8 Wave Pool Materials Needed: Stopwatch A 3 meter calibrated plank Waves Data: Maximum width Maximum length 55.2 m 86.2 m Observations: 1. Place the calibrated plank in the middle of the wave pool at approximately 1.68 m depth. Make sure the plank is perpendicular with the floor of the pool. Measure where the water reaches when there are no waves. Measure the lowest and highest point that the water reaches on the plank when the waves are created. Still water Lowest point Highest point Determine the difference Amplitude of the wave 2. Measure the time between two of the highest points as the waves pass.the plank. Time between peaks s 3. Measure the time it takes for four peaks (highest points) to pass the plank. Time elapsed s
8 4. Measure the time it takes a wave to go from the beginning of the pool to the other end. Page 8 of 8 Time elapsed s Calculations: 5. Calculate the speed of the waves. v = d X T 6. Calculate the frequency of the wave. F = cycles/seconds 7. Calculate the wavelength of the waves. Wavelength = speed/frequency 8. Calculate the amplitude of the wave. Extension 9.. Determine if the speed of the wave is the same at the start and near the end. If it is different, explain why
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