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course Phy 201

9/18 8

If an object increases velocity at a uniform rate from 8 m/s to 27 m/s in 13 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 13 seconds later is 27 m/s. Explain what the slope of the graph means and why, and also what the area means and why.

aAve= (27m/s-8m/s)/13s=1.46m/s/s

(27m/s+8m/s)/2=17.5m/s

17.5m/s='ds/13 sec

'ds=227.5m

The slope is the average acceleration for the time interval. The area is the space that represents the change in position."

Self-critique (if necessary):

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