Question: please help. The question is A car on the freeway accelerates according to a=15cos(pi t), where t is measured in hours. set up and solve

please help. The question is A car on the freeway accelerates according to a=15cos(pi t), where t is measured in hours. set up and solve the differential equation to determine the velocity of the car if it has an initial speed of 51 mph. after 40 minutes of driving, what is the drivers velocity.

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