Week 2 quiz

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course PHY201

9-4-10 4:30pm

If an object increases velocity at a uniform rate from 8 m/s to 22 m/s in 5 seconds, what is its acceleration and how far does it travel?Sketch a velocity vs. clock time graph for an object whose initial velocity is 8 m/s and whose velocity 5 seconds later is 22 m/s. Explain what the slope of the graph means and why, and also what the area means and why.

22-8/5=2.8m/s^2

14m/s = 'ds/5

5*14m/s = 70 m

from left to right it would be concave up with a slope of 2.8."

Good, but that graph would be a straight line with slope 2.8. It's not concave.

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