course Phy 231
Quiz 2 #1---------
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***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?***
accel = (vF - vI)/t
accel = (27m/s - 8m/s) / 13s
accel = about 1.46m/s/s
vAve = accel * t
vAve = 1.46/m/s/s * 13s = 18.98m/s
distance = vAve * time
distance = 18.98m/s* 13s = 246.74m
***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.***
The slope of the graph represents the acceleration which is 1.46m/s/s. The area represents the average velocity."
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