jeremy_n3o@yahoo.com.sg ]]>

Even if the give the distance between 1st n 3rd point to let u find the initial speed, when find the time interval between initial final and final velocity, u will still take the middle ie. The 2nd dot. Cos it’s between 1st and 3rd dots.

Unless finding the average speed for the car, say they give u the distance from 1st to 10th dot is 20 cm. Then u take distance 10cm divided by time (9 interval x 0.02s)

U can assume the first dot is made as time =0s

]]>And can you also help me to explain this question:

Sorry,i am also confused that why we dont need to calculate the time before hitting the first dot.I mean that isnt that the ticker timer machine will also need 0.02 second of time interval to hit the first dot on the tape,so before the when the first dot is formed,there is already 0.02s used to produce the first dot? But we are ignoring the 0.02 second when calculating.Does it contain any physics theory?If it does,sincerely asking for the explanation.Thanks a lot ^^

THANKSSS

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