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Last Modified: 2:01pm 10 Aug 11
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Last Modified: 2:01pm 10 Aug 11
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How long will it take a ball to roll down a BIG ramp? You will perform some extrapolation to see first-hand just how dangerous it is....
At the end of class today, I will roll a ball down a ramp which is about 9.5 meters long, tilted at about 4.5 degrees. Your job is to estimate how long it will take the ball to make the trip. However, the only measurements you may make are of balls rolling down a much shorter ramp. In order to use these measurements to predict the time down the long ramp, you will need to extend the data beyond the range of measurements: we call this extrapolation. The further beyond the actual measurements you extrapolate, the more and more uncertain your estimates become.
Split your team into two units and make two graphs
Make a prediction which includes a range, like this:
12.8 +/- 0.5 seconds
At the end of the class, I will roll the ball down,
and every group will measure the time.
The prediction which
includes the actual time within its range and has the
smallest range is the winner!
Winning group members will receive a prize ....
Hand in: Each team will hand in their table, and two graphs, and the analysis showing the prediction with uncertainty.
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Last Modified: 2:01pm 10 Aug 11
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