Starting from rest a car accelerates for first few seconds, Ask an Expert

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Starting from rest, a car accelerates for first few seconds of its motion according to: a = 1.16t - 0.21 t² + 0.24t³ Where t is in seconds and acceleration is in m/sec².

a. What is the change in kinetic energy of the car during the first 2.5 seconds?

b. What is the minimum power output of the engine during this period?

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