Páginas: 2 (304 palabras) Publicado: 8 de marzo de 2010
24
21/10/09
2:B
“Constant speed”
Our proposes were to calculate constant speed and compare results, my propose for this work was to havecompletely clear the constant speed
Material:
Stop watch
Meter stick
Marble
Flexibe meter
Protrator
Nut
Wooden Board
Wehave to get the constant speed of the nut following by the wooden board in different degrees for doing that we have to prepare the exact degrees with theprotractor, we measure 5 degrees and support the wooden board in that position, then we measure the distance between length of the wooden board, it give us 1 metersso we only need to drop the nuts 11 times for getting and standard speed by seconds the results were the nest ones
(5 degrees)
Distance 1m Average time3.6
Time
Seconds : 3.5 - 3.6 - 3.7 - 3.5 - 3.6 - 3.6 - 3.7 - 3.5 - 3.4 - 3.5
Speed : 3.6 m/s 360. cm/s .0036km/s
Then we do it with 10 degrees:Distance 1 m Average time 2.16
Time
Seconds : 2.16 - 2.16 - 2.17 - 2.15 - 2.16 - 2.6 - 2.17 - 2.16 - 2.14 - 2.16
Speed :2.16 m/s 216. cm/s .00216km/s
*And the last* one was with 15 degrees:
Distance 1 m Average time 1.90
Time
Speed:1.90 m/s 190. Cm/s .00190 km/s
Our conclusion that weacquired by observing is that when more degrees is lees time reached, so with more velocity we have less time.
I like this project a lot but I think that wehave to put more attention to the instructions and work better on team
Hypothesis: I thing that with less degrees will be more seconds and I was wrong

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