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The velocity graph of an accelerating car is shown. v (km/h) 60 40 20 t (seconds) 4 8 12 (a) Estimate the average velocity Vaye

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The velocity graph of an accelerating car is shown. v (km/h) 60 40 20 t (seconds) 4 8 12 (a) Estimate the average velocity Vaye of the car during the first 12 seconds. Use the Midpoint Rule with n = 3. (Round your answer to the nearest whole number.) V ave = km/h (b) At what time t was the instantaneous velocity equal to the average velocity? (Round your answer to one decimal place.) t =

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