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To stop a car, first u require a certain reaction time to begin braking;Then the car slows under constant braking deceleration. Suppose the total distance travelled by ur car during these two phases is 56.7m, when its initial speed is 80.5 kmph and 24.4m when its initial speed is 48.3kmph,
1)What is ur reaction time and
2)What is magnitude of deceleration?
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