#### Transcript of Speed and Acceleration Lab

Overall Findings:

My data shows that the higher the ramp is the slower the ball goes and the shorter the ramp is the faster the ball goes.

Did your data support/reject hypothesis?

The results did not support my hypothesis. I decided not to support my data and still support my hypothesis. There were many human errors that probably resulted in bad results.

Interpret Graphs:

Speed

Speed is a measure of the distance an object travels per unit of time.

What scientific concept is this lab about?

In this lab we are trying to find out how the height of ramp affects the speed of a ball along a track.

What is:

SPEED

**Speed and Acceleration**

Lab

Acceleration

Acceleration is a measure of the change in velocity during a period of time

What was my:

Independent Variable = Distance

Dependent Variable= Time

Hypothesis= The higher the ramp is the faster the ball goes ant the shorter the ramp is the slower the ball goes.

Final Time:

2 books= 4.29m/s

3 books= 5.04m/s

4 books= 5.89m/s

2 books was the fastest. Then 4 books. Then the slowest was 3 books.

Acceleration

V=d/t

A= Final speed - starting speed/ Final time

Velocity

Velocity is the rate of change of the position of an object.

Interpret graphs (cont.)

2 books= Increasing curve

3 books= Increasing curve

4 books= Increasing curve

Interpret graph (cont.)

The mistakes and human errors probably

resulted in bad data. We had to keep doing the lab over and everyone stopped their stopwatches at wrong times. Also, the ground was uneven so the ball would go at different speeds.

Average Speed:

Speed= d/t

Avg. Speed:

2 books= .72m/s

3 books= .84m/s

4 books= .82m/s

Average Acceleration:

A= Final speed-starting speed/ total time

Avg. Acceleration:

2 books= .17m/s

3 books= .22m/s

4 books= .22m/s

Did you speed increase or decrease?

For 2 books and 3 books the time increased, but for 4 books the time decreased

How does you data compare to other groups?

Other students data differs from mine. There data shows that the ball goes faster with a higher ramp.

What did I learn:

I learned that the height of a ramp does affect the a ball along a track. It can either go fast or slow depending on the height.

What would I change:

I would improve the procedure of the lab. I would have the lab be a little bit smoother or easy to understand

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