experiment #5

Hypothesis- The cart would move faster when more washer are added.
Objective:how many washers will it take for the cart to reach the rod that is taped the table.
Materials:i meter long string, rod, tape, paper clips, washer, cart, 100g
Data:
1 washer: didnt move at all
2 washer: didnt move at all
3 washer: it move an little bit
4 wasger: move the cart to the rod.
When the washer was double:
8 washer: The acceralation increase greatly
when the washer triple:
washer 12: The cart nearly came over the rod

It took more force to accerate the car greatly

our hypothesis was correct

Yes the force required to accerate the cart is proportional to the rate of acceration as stated in newton's second law

ex#4

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

Experiment # 3

Hypothesis:We thought the car would stop when it hits the board and the mass will move jus alittle but not fall off.

1st TrailThe car stopped but the masss really didnt move.

2nd TrailMore Force to the car then the mass moved.

3rd TrailThe car stopped and the mass just moved just alittle.

4th TrailThe car stopped and the mass moved backwards.

What happens to the 100 g mass when the cart is acted upon by the external force of the ramp? The Mass will move but it depends on how far and how hard you push it.Was your hypothesis correct?Yes,the hypothesis was correct.Does the mass follow Newton's first law?No,the object remains at zero.I learned every time you push the object into the board there would never be the same results.Nothing went wrong in the experiment.

Experiment 2

Hypothesis: The force is greater when moving fast then the force moving at an constant speed.

Material used: string 8", hall's cart, 200 gram mass, spring scale,

Procedure: 1. Cut a piece of string about 8" long. Tie one end tot eh front of the hall's cart and tie a loop in the free end.

2. Put the 200 gram(g) mass in the hall's cart.

3. Push the cart back and forth on the table and think about the problem statement.

4. Zero the spring scale and attach the hoook on the spring scale to the string loop on the cart.

5. Tug on the spring scale several times to start the cart moving from rest.

6. Now jerk on the spring scale several times to start the cart moving from rest.

7. Finally, pull the cart across a table or floor at a constant speed several times. Then pull the cart at a faster speed.

8. Analyze your results

Data: Our data show us an lot of information. When pull at an constand speed, the speed was .05 but pull at an fater speed the speed was 1.0. So we tug each one at an different time and got different results but the range was from .5 to 1.0.

Picture:

Conclusion: To keep an object moving it took more speed. Our hypothesis was correct and yes the experiment did use Newton's first law for body at rest.

Experiment 1

Hypothesis: The cart would move when the board was jerk but will still on the board after.

Material used: Woodern ramp

Ruler

Table

Hall's cart

Procedure: 1. Set the wooden ramp on a table with about 12" of the ramp extending over the edge of the table.

2. Place the Hall's cart pm the art of the ramp that is over the table. The cat at this point is in a state of rest.

3. Standing to one side, quickly jerk the ramp out from underneath the hall's cart. Try this 4-5 times.

4. Analyze your results.

Data: Trail 1: Cart came off but move anlittle bit.

Trail 2: Cart came off but didnt move as much.

Trail 3: Cart came off but didnt move as much.

Trail 4: Cart came off but didnt move as much.

Picture:

conclusion:

The cart came off, and hit the table. When it did that the cart move just an bit then came to rest. Our hypothesis was not correct but this experiment did follow Newton's first law for an body at rest.