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)Iy*(N)3r4$6073M;^)M;24M;424@>)>)8*>)>)>)>)>)66(*>)>)>)7>)>)>)>)d*(*(H4"444444Lab 101 Speed Lab Name____________________________
Hour_____
Speed is a scalar quantity that measures the amount of distance an object can travel in a given time. Velocity is a vector quantity similar to speed. A vector quantity will differ from a scalar in that it will include direction. The unit of speed is normally m/s.
Problem How slow can you make a glider fly?
Materials
Stopwatch
Meterstick
Paper 2 types
Graph paper
Procedure
Make a paper airplane using two different types of paper.
Fly the glider.
Measure the distance traveled from the starting point to the point on the glider closest to the start.
Record. Repeat and average.
Calculate speed, you may have to convert to m/s.
Repeat with a different type of paper.
Data
Plane 1Distance ( )Time ( )Speed ( )Trial 1Trial 2Average
Plane 2Distance ( )Time ( )Speed ( )Trial 1Trial 2Average
Graph
Make a distancetime graph. Show each glider on the same graph. Use the average distance and average time.
Conclusion
Which glider would give a slow speed, one that travels straight or one that curves? Explain your answer.
Which has a greater effect on speed, design or force you throw the plane? Explain.
When calculating the speed of the glider, did you find the average, slowest, or fastest speed?
Which formula did you use and in what form?
If trying for slowest speed, do you want a long distance or a long time?
What factors affected the flight of the plane?
Which of these were environmental and which had to do with the plane?
When graphing speed, which variable always goes on the horizontal axis?
Is your graph a straight line graph or curved? Explain your answer.
The slope of the line on a distancetime graph equals what?
Find two points on your graph, use rise over run to calculate the speed based on your graph. Does it agree with your calculation in the data table? Why or why not?
Experiment
A student performed a lab measuring the distance three carts traveled and the time it took to travel the distance. The student collected the following data:
CartCart MaterialMass (kg)Distance (m)Time (s)RedPlastic1.03.450.56BlueMetal0.503.451.0GreenPlastic0.483.451.12
By looking at the design of the carts the student made the following hypotheses:
A. The blue cart will be the slowest because it is made of metal.
B. The cart that travels the track distance in the shortest time will be the fastest.
C. The cart material will affect the carts speed.
Explain whether each hypothesis is supported by the experiment.
A.
B.
C.
1. If the blue cart traveled at the same speed, how long would it take to travel 6.90 m?
2. State the relationship between the speed of the green and red carts.
3. A black cart traveled the 3.45 m track in 0.52 s. What characteristic(s) can you tell me about the black cart?
Lab 101, PAGE 1 of NUMPAGES 3
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