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Forces in motionpowerpoint

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Forces in motionpowerpoint

1. 1. Jackie Godden
2. 2. Demonstrate and explain how Newton's laws of Motion apply to the physical world. o LAW 1: Dominoes Lab o LAW 2: Dominoes Lab o LAW 3: Balloon Lab
3. 3. Demonstrate and explain how friction and gravity apply to Newton's Laws of Motion o Ramp Lab
4. 4. Demonstrate and explain the relationship between speed and acceleration o Dominoes Lab
5. 5. Demonstrate and explain how simple machines utilize mechanical advantage to transfer energy (potential, kinetic, and various others) o Rube Goldberg
6. 6. Demonstrate and explain how alternate forms of energy can be utilized to influence the united states energy needs o Persuasive Essay
7. 7. Proficiencies: 1 and 3 Laws 1 and 2
8. 8. Problem: Does the amount of dominoes effect its over all speed and acceleration? Hypothesis: I believe that the more dominoes, the greater the speed. I think this because the more dominoes, the more force, and with more force, the faster the dominoes will travel.
9. 9.  20 dominoes  large flat space  ruler  tape  scrap paper  timer  a calculator
10. 10. 1. Gather all Materials 2. Line up 5 dominoes, separated evenly 3. Measure the distance from domino 1 to the last domino 4. Start the timer 5. Time until the last domino falls 6. Record data 7. find speed (distance divided by time) 8. Repeat steps 3 more times add 5 dominoes each time 9. Record all data
11. 11. IV: Dominoes DV: Speed CV: Spaced evenly, same distance apart, same surface, same timer, same dominoes
12. 12. Amount of Dominoes Trial 1 Trial 2 Trail 3 Trial 4 Average time Speed 5 .32 .41 .49 .54 .44 36 cm per seconds 10 .37 .53 .43 .32 .41 43.9 cm per seconds 15 .18 .16 .39 .24 .25 84 cm per second
13. 13. Proficiency 2
14. 14. Problem: Does the surface of the ramp effect the speed of the ball and how fast it falls? Hypothesis: I think that the surface will change the speed of the ball, because different surfaces cause a different amount of friction. I think that the trash bag-covered ramp will have the fastest time. I think this because the trash bag isn't clinging, like the smooth surface, and it isn't ruff like the towel. I predict that the towel will have the slowest time because of its ridges and its ruff texture. I also think that the faster the ball rolls down the ramp, the faster gravity will pull it to the ground.
15. 15. 1. Gather all materials 2. set up both totes 3. Position tote at desired angle 4. Tape trash bag to tote 5. Roll the ball 6. Time its roll 7. Time its fall of the edge(for seed of gravity) 8. Recode data 9. Repeat 5-8 10. Repeat 5-8 11. Remove trash bag 12. Tape towel 13. Repeat 5-8 (3 times) 14. Remove towel 15. Tape sled(smooth surface) 16. Repeat step 13
16. 16.  1 tote lid  1 large tote  1 small tote  1 trash bag  1 tennis ball  Tape  Towel  Flexible sled for smooth texture  2 timers
17. 17. IV: the surface of the ramp DV: the speed of the ball CV: same ramp, same angle, same ball, same timer
18. 18. Trial 1 Trial 2 Trial 3 Average Speed Trash Bag 0.8 0.9 0.9 0.86 39.5 cm per second Towel 1.0 1.0 1.0 1.0 34.0 cm per second Smooth 1.0 1.0 1.3 1.1 30.9 cm per second
19. 19.   G trial 1 G trial 2 G trial 3 Average Speed Trash bag .26 .15 .21 .20 565 cm per second towel .15 .15 .27 .19 594 cm per second Regular .21 .28 .37 .28 403 cm per second
20. 20.  I conclude that the trash bag had the best times of: 0.9, 0.9, 0.8, with an average of 0.86. The ball traveled down the trash bag ramp at a speed of 39.5 cm per second. The towel came in second with 1.0, 1.0, and 1.0 and an average of 1.0.The Towels average speed was 34.0 cm per second. Smooth had the slowest times such as, 1.0, 1.0, and 1.3, with an average of 1.1. The ball traveled down the smooth ramp at a speed of 30.9 cm per second. The results turned out this way because of friction. My hypothesis was partially correct, I predicted that the trash bag would have the best times, which it did, and that the towel would be the slowest, that part was incorrect because the smooth surface was slower than the towel. During this experiment we also timed how long it took for ball to touch the ground, so in other words we timed the speed of gravity on the ball. I thought that the faster the ball rolled down the ramp, the faster gravity would work. But during this test gravity pulled the ball to the ground at the exact same time every time. After doing reasurch I found that the mass of an object should not effect the speed that gravity pulls the object to the ground. So Makenzie and I decided to test this again, with a longer ramp we thought that with a longer ramp friction would have more time to "kick in". We tested with a ramp that was 1 meter and 13 cm long. The 3 surfaces that we used were: trash bag, towel, and the boards regular surface. The speed of gravity worked at 565 cm per second on the trash bag surface, 594 cm per second on the towel, and 403 cm per second. So the trash bag was not the fastest like in the original lab but gravity worked the fastest on the towel, then the trash bag, then the regular surface. The more friction the slower gravity will work the towel had the least friction in this test and then the trash bag and the regular surface had the most friction. This lab meet proficiency 3. This meets proficiency 3 because we show the comparison between the force of gravity on the ball and how friction effected the speed of the ball. Then we found the acceleration by timing the ball down the new ramp. The acceleration rates were: 477.7 for the trash bag,470.6 for the towel and 269.5 for the smooth.
21. 21. Proficiency 1 Third Law
22. 22. Problem: Does the Direction that you hold the balloon in effect the strength of the opposite force. Hypothesis: I that when you hold the balloon with the opening down the airs force will be the strongest, I think this because hot air rises and the hot air will travel into the balloon and push it up for the longest amount of time.
23. 23.  Bag of balloons Timer
24. 24. 1. Blow up balloon number one 2. Pinch the balloon to keep the air inside 3. Hold balloon with opening facing down 4. Let go of the balloon and start timer 5. When balloon hits the floor stop the timer 6. Repeat steps 3 more times 7. Repeat step 1 and 2 8. Hold balloon facing up 9. Repeat step 6 10. Repeat step 7 11. Hold balloon facing left 12. Repeat step 6 13. Blow up balloon 14. Hold it to the right' 15. Repeat 3 more times
25. 25.   Trial 1 Trial 2 Trial 3 Trial 4 Average up 1.6 0.9 1.0 0.9 1.1 down 1.5 1.3 0.9 0.8 1.2 Left 1.2 1.6 0.8 0.8 1.1 right 1.3 0.8 1.6 0.8 1.1
26. 26. After testing the equal and opposite force on the balloon, I found that when the balloons opening is facing down, that’s were strongest the opposite force is. That proves that my hypothesis was correct. In my hypothesis I stated that I believed the force would be strongest with the opening down Because hot air rises. The hot flows up into the opening, which is facing down. We timed how long each balloon was in thee air. With the opening up the average was 1.1, down 1.2, left 1.1, and right 1.1.This not only shows that the force Is strongest when the opening is down but that the force is equal from all Directions, except down. This lab met proficiency number 1, used this lab to show Newton’s third law. This lab shows Newton’s third law because, the third law states “ for every force there is one equal and opposite. The forces are, the balloon and the air holding up the balloon.
27. 27. Proficiency 4
28. 28. Fling a rubber band at dominoes. When you fling the rubber band, that causes Elastic potential energy . Elastic potential energy is
29. 29. Rubber band hits the first domino in the domino chain.
30. 30. The domino chain falls. Energy pushes through all of the dominoes causing kinetic energy. The domino chain shows kinetic energy Because__. The domino chain also shows sound energy because the vibrations move through the domino chain. When the vibrations move through the domino chain you can even hear the vibrations and sound.
31. 31. Domino chain hits the marble.
32. 32. The marble rolls of the table. When the marble roll off the table it falls to the floor. This is an example of gravitational energy.
33. 33. The marble hit the second domino chain. The energy from the domino falling, creates enough energy and movement for the marble to hit another domino chain.
34. 34. The second domino chain falls. The domino chain is another example of kinetic energy. The last domino falls and rings a bell!
35. 35. Proficiency 5
36. 36. Bright is the sun. Heat pours out on you. Sweat drips down your forehead. The heat bubbles and boils. Why can’t we use the sun for a good propose? Solar energy allows us to use the suns natural heat and light to heat and light buildings. From cooking food to providing energy for your house, solar energy won’t let you down! So when your looking for an alternative form of energy; choose solar because it’s good for the environment, can save you money, and it has many purposes.
37. 37. Choose solar energy because it is one of the few forms of energy that is good for the environment. Unlike most forms of energy, solar energy doesn’t pollute when be converted into energy. The sun will give off light and heat everyday weather we use it or not, so why not use it? Every 8 minutes the sun gives off more energy than the whole world uses in a year. In 2 seconds the sun gives us enough energy to power one million cars! Why don’t we accept the power and energy that is natural and clean? We can see energy that is always there! The United States needs an alternative form of energy and the most practical is solar. Not only is it good for the environment but it will save you money too.
38. 38. Collect some rays and money at the same time! When you get solar energy you can save lots of money. Depending on your climate and the amount of panels you own, you can save anywhere form \$30 to \$75 monthly. That’s anywhere from \$360 to \$900 in a year! The more panels that you own the more you save. Make sure to angle your panels for the most sunlight possible and you will save even more! It’s the best energy; its saving you money and its good for many things!
39. 39. Get solar energy for many different things. Solar energy can do everything for you! It can be used in the food industry to dry fruit and more. Naturally hot, the suns energy can be used to heat houses and pools. Energy from the sun can be used to give your house electricity. While solar energy can be used for many purposes it has a downside.
40. 40. The most common reason keeping people from switching to solar energy is the coast. To install solar panels is quite costly and it may take years before you actually see the savings. After about 10 years you will start to see savings of \$30 to \$75 monthly. Don’t let the initial coast keep you from converting.
41. 41. Choose solar energy as your alterative form of energy. Solar energy is good for the environment, saves you money, and is useful for many things. Once again GO SOLAR! Saving the earth; one panel and person at a time.