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a car travelling at a constant speed of 30m/s along a straight road passes a police ar parked at the side of the road. At

a car travelling at a constant speed of 30m/s along a straight road passes a police ar parked at the side of the road. At the instant the speeding car passes the police car, the police car starts to move with a constant acceleration to chase the speeder. What is the speed of the police car at the instant it overtakes the other car.

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