Science:Math Exam Resources/Courses/MATH100 B/December 2023/Question 11/Statement

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A car is driving at m/s along a straight road. A police officer is standing m to the side of the road with a radar gun measuring speeds. The measured speed is the rate of change of the distance between car and officer. What is the measured speed when the car has not yet passed the officer and is 3m away from the closest point on the road to the officer?