Seed 41

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course Phy 121

The problem:A ball is moving at 10 cm/s when clock time is 4 seconds, and at 40 cm/s when clock time is 9 seconds.

• Sketch a v vs. t graph and represent these two events by the points (4 sec, 10 cm/s) and (9 s, 40 cm/s).

• Sketch a straight line segment between these points.

• What are the rise, run and slope of this segment?

answer/question/discussion (start in the next line):

30cm/s, 5s, 6m/s^2

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• What is the area of the graph beneath this segment?

answer/question/discussion (start in the next line):

a = (10m/s+40m/s)/2 *5s = 125m/s^2

&#Very good responses. Let me know if you have questions. &#