Post Lab IV here. Remember to include an objective, hypothesis, data, and conclusion. Your picture of the experiment should be posted on your personal blog. Please make sure that you composed a detailed conclusion which explains the data that was gathered.
14 comments:
Charmisa Massie
Objective:
does it take force to change the speed or direction of a moving object then it does to maintain the initial speed of the object.
Hypothesis:
i think that the direction of the object will change each trail because of a strong force given to it.
Data:
each time a strong force was given to the back of that cart and the direction charged twice. the first two time the cart went left and the last three time that cart went right.
Conclusion:
during this section of the project i have learned that the force behind ant object matters because that direction can change and there is a chance that the object can flip over.
Subject Question- Do Objects in motion really continue in motion unless acted upon by an external force?
Hypothesis-I predict that the 100 gram mass weight will fall off the cart once it hits the ramp and the cart will stop moving.Proving Newton Law which states that any object in motion will remain in motion unless acted on by an outside force.
Materials -
Halls Cart
Ramp
Card Board
100 gram weight
Tape
Procedure- First I taped the card board onto the Halls Cart,and then put the 100g weight on it. Lastly I pushed the cart into the ramp to get mt results.
Test 1 The cart stopped moving and the gram fell off.
Test 2 The cart stopped moving and the gram fell off.
Test 3 The cart stopped moving and the gram fell off.
Test 4 The cart stopped moving and the gram fell off.
Conclusion-
The 100g weight fell off of the cart and it stopped moving.Newtons law was right any object in motion will continue in motion unless acted upon by an outside force . This experiment can be used in the real world with test theories for example if the people who make cars want to know what will happen when a car rolls down a hill,they could test it out and see that it will eventually stop once the outside force acts on it.
Objective:
Does it take force to change the speed or direction of a moving object then it does to maintain the initial speed of the object.
Hypothesis:
I think that the force to increase speed and the force to change direction is greater than the force to maintain a constant speed.
Materials: Small cart, ruler, table, string about 8cm, 200 gram mass used to weigh the cart and a spring scale.
Data: Increasing Speed
Trials Starting Speed Final Speed Difference
1 0.5 1.5 1.0
2 0.5 1.0 0.5
3 0.5 2.5 2.0
4 0.5 2.0 1.5
Changing Direction
Trials Starting Speed Final Speed Difference
1 0.5 1.0 0.5
2 0.5 1.5 1.0
3 0.5 1.3 0.8
4 0.5 0.9 0.4
Conclusion:
In conclusion both of my hypotheses were correct it to more force to increase the speed and change the direction of the cart then it is to keep the cart going at that same constant speed. This experiment relates to real life when you are driving a car and you make a u-turn or put your foot on the gas pedal its more to do that then to just keep on going straight.
Objective: The objective to this experiment is to calculate if it takes force to change the speed or direction of a moving object then does to maintain the initial speed of the object.
My Hypothesis: I believe that the direction of the object will change once for the first trial and then on the other ones they will go back to normal.
Materials used:
-Halls Cart
-Ramp
-Card Board
-100 gram weight
-Tape
Procedure- The first thing I have to do is taped the card board onto the halls cart. And then I will put the 100g weight on top of the bored. And finally, I will pushed the cart onto the ramp to get my results.
Data: Each time we put force to the rear of the cart, the direction of the cart changed twice. The first two times, the cart turned to the left. The next three times, it went to the right.
Was my Hypothesis right?- In some way i believe it was right. I did say that it might just turn the first time, but turned one way the first two times, and the next three times to the right.
Hypothesis
The force will be greater to maintain the initial speed of the cart.
Materials
Cart
100 gram weight
pulling scale
1st pull-(slow)-0.2
2nd pull-(fast)-0.5
3rd pull-(turning)0.5
Questions
(answers only)
1.Maintaining initial speed.
2.It takes more force turning and changing directions.
3. Yes
4.No
Objective: Does it take force to change the speed or direction of a moving object then it does to maintain the initial speed of the object.
Hypothesis: I think that the force will be greater than the force required.
I think the force will be less than the fore required to maintan the initial speed of the cart.
Data:
Acceleration
Trail 1: 100g-1N
Trail 2: 150g-1.5N
Trail 3: 150g-1.5N
Trail 4: 150g-1.5N
Trail 5: 275g-2.7N
Change Direction
Trail 1: 300g-3N
Trail 2: 85g-1.8N
Trail 3: 150g-1.5N
Trail 4: 150g-1.5N
Trail 5: 250g-2.5N
Conclusion: It take more force to accelerate the cart than to maintain its initial speed. I think it takes more force to change the direction of the cart than to maintain the direction of the cart. I think my hypthesis is correct. Yes the force required to change the speed or direction of a mopving object consistent with Newton's first Law.
Problem Statement: Does it take more force to change the speed of or direction of a moving object than it does to maintain the initial speed of the object?
Objective: The objective of this lab is to determine whether the force required to change the speed of an object is greater than or less than the force required to change the direction of the object.
Hypothesis: There were two prediction that I had to create when conducting this experiment. I predicted that the force required to increase the speed or accelerate the cart will be greater than the force that is required to maintain the cart's initial speed because when the cart is maintaining its initial speed, it is moving at a constant rate. When it is then moved to accelerate, the force that it exerts will have to also increase. I also predicted that the force required to change the carts direction will be less than the force that is required to keep the carts initial speed because when a car, for instance, is driving on the express way, it is moving at constant rate but, when it has to turn off, it will have to slow down in order to turn. The cart in this experiment has the same concept.
Materials: For this experiment, I used a cart, a 200g mass, a piece of string, and a spring scale.
Procedure:
1. I tied the 8" piece of string to the front of the cart.
2. I tied a loop in the free end of the rope and attached the spring scale.
3. I placed the 200g mass in the inside of the cart.
4. I had to start moving at a slow pace then quickly pull harder to accelerate.
5. I repeated step 4 for 5 trials.
6. I started the cart again slowly and then turned the spring scale creating a large arc to change the direction of the cart.
7. I had to repeat step 6 for 5 trial.
Data: (on personal blog)
Conclusion: My first hypothesis was correct. It takes a larger amount of force to accelerate a cart from it initial speed. However, my second prediction was incorrect. It actually took a larger amount of force to change the direction of the cart rather than to keep it in its initial direction and to maintain its initial speed. A perfect example would be a car driving on the express way. Before a car initially hits the express way, it has to, first, drive at a constant speed. When it finally hits the express way, it has to accelerate faster to maintain the required speed limit on the express way. For changing the direction of the cart, thinking about it form a logical standpoint is how I derived at my hypothesis. I figured that if a car is driving at its initial speed and wants to turn the corner, it would have to slow down so the car would not flip over. Then again, the initial speed of the car may determine whether the car has to slow down or not. For instance, if a car is going 30 miles per hour initially and has to turn the corner, it may not have to slow down because it is already going at a safe pace to change direction. Now, if a car is going 75 miles per hour initially and has to change direction, it will have to slow down so it won't tip over while trying to turn.
While conducting this lab, I learned that in practical applications, the speed and accelerations may vary depending on the initial speed of the car, the size of the car, etc.
Latisha Thomas
Objective:
Do Objects in motion really continue in motion unless acted upon by an external force?
Hypothesis:
I think that the 100(g) mass weight will fall off the cart once it hits the ramp.
Materials -
Ramp
Hall Carts
100(g) weight
Card Board weight
Tape
Procedure:
First I taped the card board on the Halls Cart,then I put the 100g weight on it.Finally I pushed the cart into the ramp to get my results.
Test 1:The cart stopped moving and the gram fell off.
Test 2:Same as test 1.
Test 3:Same as test 1.
Test 4:Same as test 1.
Conclusion:
The 100g weight fell off of the cart and then it stopped moving.Newtons law was correct because any object in motion will continue in motion unless acted upon by an outside force . This experiment can be used in a real world application test theories, "for example, if the people who make and design cars want to know what will happen when a car rolls an falls down a hill,then 9 times out of ten they could test it out and see that it will end up stopping once the outside force acts on it.
Objective: I had to address this question "Does it take more force to change the speed or direction of a moving object than it does to maintain the initial speed of the object?"
Hypothesis:I think it is going to be greater as my first hypothesis and then it might be less as my second hypothesis.
Materials: For this experiment, we used a cart, a 200g mass, a piece of string, and a spring scale.
Procedures:
1. We tied the 8" piece of string to the front of the cart.
2. We tied a loop in the free end of the rope and attached the spring scale.
3. We placed the 200g mass in the inside of the cart.
4. We had to start moving at a slow pace then quickly pull harder to accelerate.
5. We repeated step 4 for 5 trials.
6. We started the cart again slowly and then turned the spring scale creating a large arc to change the direction of the cart.
7. We had to repeat step 6 for 5 trial.
Conclusion: My first hypothesis was correct it was greater. My second hypothesis was incorrect because it went at a constant speed and I said that it would be less.Force behind any object always would matter because it can change direction which could flip over
Hypothesis
The force will be greater to maintain the initial speed of the cart.
Materials
Cart
100 gram weight
pulling scale
(1 Pull)-(Slow)=0.2
(2 Pull)-(Fast)=0.5
(3 Pull)-(Turning)=0.5
.Maintaining initial speed.
2.It takes more force turning and changing directions.
3. Yes
4.No
Objective:
Does it take force to change the speed or direction of a moving object then it does to maintain the initial speed of the object.
Hypothesis:
I think it is going to be greater as my first hypothesis and then it might be less as my second hypothesis.
Materials:
Small cart, ruler, table, string about 8cm, 200 gram mass used to weigh the cart and a spring scale.
Data:
Increasing Speed
Trials Starting Speed Final Speed Difference
1 0.5 1.5 1.0
2 0.5 1.0 0.5
3 0.5 2.5 2.0
4 0.5 2.0 1.5
Changing Direction
Trials Starting Speed Final Speed Difference
1 0.5 1.0 0.5
2 0.5 1.5 1.0
3 0.5 1.3 0.8
4 0.5 0.9 0.4
Conclusion:
In conclusion both of my hypotheses were correct it to more force to increase the speed and change the direction of the cart then it is to keep the cart going at that same constant speed. This experiment relates to real life when you are driving a car and you make a u-turn or put your foot on the gas pedal its more to do that then to just keep on going straight.
Hypothesis
The force will be greater to maintain the initial speed of the cart.
Materials
Cart
100 gram weight
pulling scale
(1 Pull)-(Slow)=0.2
(2 Pull)-(Fast)=0.5
(3 Pull)-(Turning)=0.5
1. To Maintain initial speed.
2.It takes more force turning and changing directions.
3. Yes
4.No
Objective:Does it take more force to change the speed or direction of a moving object than it does to maintain the initial speed of the object?
Hypothesis: I predict that the direction of the object will change because of the force applied.
Data:trail 1- 0.5/50
trail 2- 1/100
trail 3- 1.5/150
trail 4- o.5/50
trail 5- 3/30
trail 6- 1/100
trail 7- 4/400
2nd trail:trail 1- 0.5/50
trail 2- 1/100
trail 3- 1.5/150
trail 4- 1.5/150
trail 5- 2/200
trail 6- 1.5/150
trail 7- 1.5/150
Materials:Cart
200g mass
String
Spring Scale
Conclusion: I learned that the force is very important because depending on how its applied the object can move in a different direction.
Objective:Does it take more force to change the speed or direction of a moving object than it does to maintain the initial speed of the object?
Hypothesis: I predict that the direction of the object will be the same because of the force wont really effect.
Data:trail 1- 0.5/50
trail 2- 1/100
trail 3- 1.5/150
trail 4- o.5/50
trail 5- 3/30
trail 6- 1/100
trail 7- 4/400
2nd trail:trail 1- 0.5/50
trail 2- 1/100
trail 3- 1.5/150
trail 4- 1.5/150
trail 5- 2/200
trail 6- 1.5/150
trail 7- 1.5/150
Materials:Cart
200g mass
String
Spring Scale
Conclusion: my hypthesis was wrong but i still learned that force played a major role in this expermint.
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