To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 51.8 m when its initial speed is 81.3 km/h, and 20.1 m when its initial speed is 48.8 km/h. What are (a) your reaction time and (b) the magnitude of the deceleration? (a) Number i (b) Number IM Units Units
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 51.8 m when its initial speed is 81.3 km/h, and 20.1 m when its initial speed is 48.8 km/h. What are (a) your reaction time and (b) the magnitude of the deceleration? (a) Number i (b) Number IM Units Units
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Transcribed Image Text:To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration.
Suppose that the total distance moved by your car during these two phases is 51.8 m when its initial speed is 81.3 km/h, and 20.1 m
when its initial speed is 48.8 km/h. What are (a) your reaction time and (b) the magnitude of the deceleration?
(a) Number
(b) Number
i
Units
Units
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