lab report

Lab Report
Velocity
Objective: We are looking for the down falling velocity of a an object positioned at .194m
Hypothesis: If you were to drop an object lighter than the control at the same height of, .194m its velocity would be slower.
Materials:
Control-Keys
Object two- five quarters
Measuring tape
Tape
Ink blot
Tape timer
Scale
Procedures:
One: weight the control
Two: place tape timer at .194m from the ground
Three: attach control to tape, attach tape to tape timer
Four: run one, drop control from .194m from the ground, count dots, and record.
Five repeat steps three and four two more times with the control.
Six: Tape the five quarters together and Weigh object two
Seven: Attach to tape, attach tape to tape timer, place tape timer at .194m
Eight: run one for object two, drop object two from .194 meters, record data
Nine: repeat steps seven and eight.
Observations: There was a 0.18m/s (velocity) between the two objects. The average speed for the keys was 0.52m/s . The average speed for the five quarters tapped together was 1.06m/s . There was a 5.6g difference in weight, the keys weighing 34.4g and the quarters weighting 28.8g.
Results:
Place-
ment
Weight
1
2
3
Average
Control
0.194m
34.4g
0.51m/s
0.56m/s
0.50m/s
0.52m/s
Object 2
0.194m
28.8g
0.31m/s
0.33m/s
0.388m/s
0.346m/s

Conclusions: Our hypothesis was true, weight in deed has an impact on the velocity of an object. The lighter the object the slower it falls.





Data: (conversion strategy) 60 dots per second
Key Run:
Key weight: 34.4 grams
Run One: 52 dots = 0.87s rounded Vf = 0.446m/s a = 0.51m/s
Run Two: 50 dots = 0.83s rounded Vf = 0.47m/s a = 0.56m/s
Run Three: 53 dots = 0.88s rounded Vf = 0.441m/s a = 0.50m/s

T- Run one= 0.87s
Run two= 0.83s
Run three= 0.88s
Di= .194m
Df= 0m
Vf= ?
a= ?
v= =


a=




























Five quarter runs:
Weight: 28.8 grams
Run One: 67 dots = 1.12s rounded Vf = 0.346m/s a = 0.31m/s
Run Two: 65 dots = 1.08 s rounded Vf = 0.354m/s a = 0.33m/s
Run Three: 60 dots = 1.00s rounded Vf = 0.388m/s a = 0.388m/s

T= Run one:1.12s
Run two: 1.08s
Run Three: 1s
Di= 0.194m
Df= 0m
Vi= 0m/s
Vf= ?
a= ?
v= =


a=