10. 54.022 The velocity graph of an accelerating car is shown. v(km/h) 120 100 40 20 t(seconds) 12 (a) Estimate the average velocity of the car during the first 12 seconds. km/h ave (b) At what time t was the instantaneous velocity equal to the average velocity? (Round your answer to one decimal place.) Need Help? Read Tik to Tuter