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9. A 1200 kg car drives at an initial velocity vo = 45 m/s along a highway. At t = 0, the driver releases the
gas, and the car slows to a stop due to a drag force given by Fdrag = -b v, where b = 15 kg/s³. Derive a
function for the car's velocity as a function of time and solve it for the car's velocity at 10, 20, and 30 s.

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