Experiment with and explain how Newton's Laws of Motion apply to the physical world.
Problem- How does the mass of a toy car affect the distance a piece of wood moves?
Relate to the real world?
This problem realtes to the real world if a real car hits something. It could hit something small or large which could take peoples lives. To find out how bad the crash would be car delears may test this problem while testing the safety of a car. They would probably so it a little bit different but it still proves and tests the safety of that car and the car or other thing that it hits.
Hypothesis- I think that the greater the mass of the toy car the farther it will move because the greater the mass the easier it will be to move something. Also the size of the object has a great affect on the inertia.
Experimental Design-
Materials- Toy Car, piece of wood, pennies, yard/meter stick
Variables-CV- Piece of wood, car, pennies, surface, push strength, distance car starts away from the piece of wood.
IV- How far the piece of wood goes.
DV- Car mass.
Procedure-
1. Gather all materials.
2. Set a piece of wood 1 foot away from the toy car.
3. Start with just a regular toy car and push it against the piece of wood as far as you can.
4. See how far away it moved.
5. Do this 2 more times .
6. Now stack 5 pennies on top of the car.
7. Go from the same distance
8. Do this 2 more times
9. Now add another 5 pennies on top of the others
10. Do the same thing as step 7 and 8.
11. Record all accurate results.
12. Clean up workstation.
Conclusion-
To test Newton's Laws of motion I did three experiments. This one was a test of the first law. My problem was asking how the mass would affect how far it pushed the same piece of wood. I had to redo this experiment because the first way it barely moved the wood and the pennies were flying everywhere. After this happened I changed my way and got it to work. In the end my hypothesis was supported because the average of the one I thought would push it the farthest did and it pushed it 3.4 feet on average. That was my test to prove Newton's Laws of motion; Law #1.
Eliminating external variables-
To eliminate external variables in this problem you must do a lot of things. First you need to make sure that you use the same surface as well as the same car. Next, you have to use the same amount of tape on all cars to hold the pennies and to make that accurate you may have to weigh the pieces of tape if they change. Also, you have to use the same size of the piece of wood and way of measuring either by the end of the piece of wood or by the front. Doing these things and only using accurate results will eliminate all external variables and make this experiment one hundred percent accurate.
Newton Law #2
Problem: What impact of the surface of track have on the time taken to reach bottom of it?
Relate to the real world?
This problem about the impact of the surface of a track or a road is easily relatable to real life. First of all it rains which would be kind of like the paper. This will see if you go faster in the rain so it will be less safe. Next, the sheet has about the equal effect of snow which you clearly go slower on it but in real life you need to adjust your speed so you do not slip, much like this sheet that had the car slipping in many directions.
Hypothesis: I think that the smoother the surface is then it will take less time to hit the bottom.
Experimental Design:
Materials-
• Plastic surface
• Wood surface
• Blanket on top of wood surface
• Toy car
• Timer
Variables-
• CV- timer, car, person timing, angle of ramp, height of ramp, distance of ramp
• IV- speed of car going down the ramp.
• DV- ramp surface
Procedure-
1. Gather all materials.
2. Build ramp #1
3. Measure the length.
4. Measure the angle of the ramp
5. Now build your next ramp with the same angles and the same length.
6. Do the same while building the last ramp.
7. Now with the ramp that is made of plastic you need to start the car at the very top.
8. Start the timer as you release the car.
9. Stop the timer as soon as the car gets to the bottom of the track.
10. Do steps 7-9 2 more times.
11. Record accurate results.
12. Do steps 7-9 with the wood ramp.
13. Record all the results that are accurate.
14. Now do 7-9 with the blanket on top of the wood surface.
15. Record results.
16. Clean up workstation.
Conclusion- My problem asking what impact of the surface of track have on the time taken to reach bottom of it had some difficulties in my experimental design. Instead of using a blanket which did not work I had to change that to a sheet so the car would actually go down the ramp. Also, instead of using a wood ramp I used cardboard. To make it easier I used the same cardboard ramp and made it stay in place and then just cover it up so I did not have to build many ramps or have to make sure they were all the same length and at the same angle. In the end my hypothesis was supported because the wood and the paper surfaces were the fastest to go down and therefore the sheet took way longer.
Eliminating External Variables- To eliminate all external variables in my problem first I need to make sure that I measure as accurate as possible. I need to make the angles exactly the same as well as the distance of the ramp. Also, I have to be sure that I start and stop the timers at the right times to prevent any mistakes or inaccurate results. To be one hundred percent accurate I will also use the same car and the same timer just in case that happens to effect my results. Anything else that will effect my results I will get rid of and I will do everything the same way using the same materials so results are not effect. Lastly, I will only graph the accurate results.
Newton Law #3
Problem- Is the reaction different if you roll a ball against the wall from a farther distance?
Relate to the real world?
This problem can relate to the real world in a couple ways. The first way that popped into my head is if you get in a crash and are rolling and then bang into something. Obviously with a car or something it would be way different than a ball but it will still see if the speed would affect how far you rolled. After this experiment it could help people that test the sefety of cars in one way. They still would have to test other safety hazards but this would help one main one.
Hypothesis- I think that the reaction will be greater if the ball starts closer to the ball because it will still have more power on it.
Experimental Design-
Materials-ball, wall, yard/meter stick
Variables- CV- wall, ball, measurements, start and end points.
IV- Distance ball starts
DV- Distance ball ends up
Procedure-
1. Gather all materials.
2. Locate a start point.
3. Roll the ball against the wall as hard as you can with out moving backwards before going forward.
4. Measure from the wall how far it goes.
5. Subtract how far away the ball started.
6. Use the next starting distance and do it again.
7. After that use the last distance and do the same thing one more time.
8. Record all accurate results
9. Clean up workstation
Conclusion-
In conclusion this was probably not the best experiment to do because it was very hard to figure out how hard I rolled the ball every time. Therefore I had very mixed results and I am not sure which is correct and which is not. I would do everything differently than I did because it is too hard to do this experiment this way. In the end I would never try a experiment that you have to throw something the same because it is too difficult.
Eliminating external variables-
To eliminate all and any external variables in this particular experiment you must be careful. First you need to be sure you do the experiment in the exact same spot every time because if there is just a little difference in the wall such as a dent or a crack or something the experiment could be completely different. Also, you cannot change the spot on the floor because it might change the path of the ball. Also, the ball has to be the same because if it is a different size or mass it could easily effect the results of the problem. Lastly, I need to be sure to only include accurate results because if I include inaccurate data then the accurate ones get messed up.
Friction and Gravity
Problem- Does mass affect the speed that a ball falls?
Relate to real life?
This problem testing the speed of different masses falling can actually relate to real life. Have you ever got hit by something because you didn't have time to react? Well if you did this experiment you would know that there is not much time when tou drop something heavy compared to something light like a feather or a piece of paper. Therefore this relates to real life because of those reasons.
Hypothesis-- I think that the ball with the most mass will travel fastest because it is heavier so all the mass will travel faster.
Experimental Design-
Materials- stop watch 3 different massed balls yard stick
Variables- CV-Timer, size of ball, height of drop, start and stop points
DV- Mass of ball
IV- Time it takes for the ball to hit the ground
Procedure-
1. Gather all materials.
2. Hold a yardstick straight up.
3. Hold the ball at the top of the yardstick.
4. Start the timer as soon as you let go of the ball.
5. Stop the timer as soon as the ball hits the ground.
6. Do this again 2 more times.
7. Now use a different ball.
8. Repeat steps 2-6
9. Now use another ball.
10. Repeat steps 2-6 once again
11. Record all accurate results.
12. Clean up everything.
Observations-
In conclusion this experiment got messed up a few times and I had to re-start and re-write things that went wrong like not using balls but I ended up using pieces of paper a ball and a rubber band ball because then I could control that they are all the same size. My hypothesis was supported in the end because the ball (actual bouncy ball) is the one that hit the ground in the least amount of time on average. In conclusion there are things that I would've just started with changed so if I were to do this experiment again then I would start it the way that ended it being which was not just balls the same size but different objects.
Eliminating External Variables-
To eliminate all external variables you have to make sure that the size of the ball stays the same. Next you have to make sure that they are different masses. Next you need to try to make sure that the temperature is not much different and that there is no fan or anything on that is effecting your results. If the temperature is a little different but there is nothing affect the wind speed or anything then it should not affect the results but it should be around the sane temperature to make sure. Also, I will need to be very accurate when I start and stop the timers and maybe have somebody drop the ball for me from the same distance every time. If I do all these thing then it should make my results accurate.
Speed and acceleration-
- Timer
- 10 dominoes
- Ruler (w/ cm side)
- Gather all materials.
- Set up 10 dominoes 25 within a ten cm span.
- Time how long it takes the first 5 dominoes to fall.
- Now time the last 5.
- Lastly time them all together.
- Calculate the acceleration.
- Now do this 2 more times.
- Do the same thing now with the dominoes within a span of 30 cm.
- Lastly change the span to 35 cm.
- Record all results.
- Clean up workstation
Problem- Is the acceleration faster if the dominoes are farther apart? Relate to real life? This problem could relate to real life if something falls over. If things that were set up fell over you would know how fast they were falling. An example would be if there are items supoer close together ou would know that they would accelerate really fast and you would need to quickly move out of the way.
Hypothesis-I think that the acceleration will decrease as the dominoes spread farther apart because they have a farther distance to go and it takes longer if the barely hit another.
Experimental Design-
Materials-
Variables
CV-location, dominoes, timer, space in between dominoes
IV- speed of acceleration
DV-distance of dominoes
Procedure-
Conclusion- In the end my hypothesis was supported because the closer the dominoes were the faster the acceleration was because of the fact that they have less of a distance to go and they are closer together so they hit each other faster. The average of the fastest time was around 3 seconds. If I was to do this experiment again I would not because the dominoes were really difficult to keep setting up over and over again.
Different Energy
Imagine an energy efficient world. The USA at the moment is not that world but all we must do is use more solar power and we can become that world. Solar power is said to be very efficient. Is the cost worth it? Does it do as much as other energy's? Don’t we already use enough solar power in the United States?
Solar power has it's flaws but it is overall better than the normal U.S power. If we used solar power then we have as much energy as we could possibly need. This is where the back fall comes though. If everything is powered by the sun what happens if it is covered? We will have no fridge to cool things, no ovens to heat thing and no light to see! On the other hand this could also happen with our energy now if it runs out somehow someday. Think about it, do you have a back-up plan? Not many people do but I thin k I have all the answers.
Obviously I do not expect everything to change in day or weeks but if we install little bits of solar panels at a time everyone will have a perfect and effective plan. We can use solar panels when the sun is out and whenever the sun is hidden among the clouds we will easily transfer back over. In conclusion we should really consider trying the transfer today. We already use some solar panels around and if it is energy efficient why not?
Solar energy is one of the best forms of energy. It is never ending unless the sun dies out but I highly do not think that will happen anytime soon. We should try using solar panels more often and we should start them in places like California and Texas where they will work almost constantly. Another cool thing about them is that when it is dark out and you want to sleep you wont have to turn out the lights because they are already off. The only place I see not using our solar panels is New York but aside from that solar power is our best option.
Rube Goldburg-
To start there are dominoes.
Next that hits a ball held by scissors.
That goes down inclined planes and then through screws.
Finally it goes into a pulley which pulls up the sign. (End task)
Rube Goldburg-
To start there are dominoes.
Next that hits a ball held by scissors.
That goes down inclined planes and then through screws.
Finally it goes into a pulley which pulls up the sign. (End task)
