A car's speed during the interval t = 0.5 s to t = 20 s is given by t = c√t, where c is a constant. Over the interval t = 10 s to t = 20 s, is the average speed greater than, equal to, or less than the instantaneous speed (a) at t = 15 s and (b) at t = 20 s?..
A car's speed during the interval t = 0.5 s to t = 20 s is given by t = c√t, where c is a constant. Over the interval t = 10 s to t = 20 s, is the average speed greater than, equal to, or less than the instantaneous speed (a) at t = 15 s and (b) at t = 20 s?..
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Transcribed Image Text:. A car's speed during the interval t = 0.5 s to t = 20 s is given by t = c√t,
where c is a constant. Over the interval t = 10 s to t = 20 s, is the average
speed greater than, equal to, or less than the instantaneous speed (a) at
t = 15 s and (b) at t = 20 s?
..
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Step 1: Define instantaneous speed and average speed:
VIEWStep 2: Calculate the average speed of the vehicle in the time interval from t=10 s to t=20 s.
VIEWStep 3: (a) Calculate the instantaneous speed at t=15 s and compare with average speed in step 2:
VIEWStep 4: (b) Calculate the instantaneous speed at t=20 s and compare with average speed in step 2:
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