Alcohol consumption slows people's reaction times. In a controlled government test, it takes a certain driver ?1=0.33 s to hit the brakes in a crisis when unimpaired and ?2=1.07 s when drunk. If the car is initially traveling at ?=87 km/h, how much farther does the car travel before the brakes are applied when the person is drunk than it travels when the person is sober?

Alcohol consumption slows people's reaction times. In a controlled government test, it takes a certain driver ?1=0.33 s to hit the brakes in a crisis when unimpaired and ?2=1.07 s when drunk. If the car is initially traveling at ?=87 km/h, how much farther does the car travel before the brakes are applied when the person is drunk than it travels when the person is sober?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 55AP: A truck tractor pulls two trailers, one behind the other, at a constant speed of 1.00 102 km/h. It...

See similar textbooks

Similar questions

Jo, with a reaction time of 0.2 second, rides her bike at a speed of 6.0 m/s. She encounters an emergency situation and “immediately” applies her brakes. How far does Jo travel before she actually applies the brakes?
As soon as a traffic light turns green, a car speeds up from rest to 50.00 mi/h with constant acceleration 9.00 mi/h/s. In the adjoining bicycle lane, a cyclist speeds up from rest to 20.0 mi/h with constant acceleration of 13.00 mi/h/s. Each vehicle maintains constant velocity after reaching a cruising speed. For what time interval is the bicycle ahead of the car?
A driver has a reaction time of 0.50 s, and the maximum deceleration of her car is 6.0 m/s2. She is driving at 20 m/s when suddenly she sees an obstacle in the road 50 m in front of her. Can she stop the car in time to avoid a collision?
A driver, driving at a constant speed of 30m/s in a 50 mph zone, is unaware that he is being observed by an approaching police car (coming toward him from the front). At time t = 0, they are 800m apart and the police car has an approach speed of 40 m/s. When will the police officer catch up with the motorist? a) 80 s b) 68.6 s c) 11.4 s
A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the equation x (t) = at^2 -bt^3, where a = 1.50 m/s^2 and b = 0.05 m/s^3. What is the instantaneous velocity of the car at t = 5 s?
A car is 126 m from a stop sign and traveling toward the sign at 29 m/s. At this time, the driver suddenly realizes that she must stop the car. If it takes 0.200 s for the driver to apply the brakes, what must be the magnitude of the constant acceleration of the car after the brakes are applied so that the car will come to rest at the stop sign?
a motorist travelling with a constant velocity of 30m/s passes school- crossing comer, where the speed limit 20km/h. just as the motorist passes, a traffic officer on a motorcycle stopped at the comer starts off in pursuit with a constant acceleration of 2.0m/s^2. how much time elapsed (in seconds) before the officer catches up with the motorist.
A space shuttle is launched from rest. It takes 8.00 s to reach 158 km/h , and at the end of the first 1.00 min its speed is 1580 km/h . Assuming the acceleration is constant during each time interval (but not necessarily the same in both intervals), what distance does the shuttle travel during the interval from 8.00 s to 1.00 min?
A simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.2 m/s in 2.14 s, what will be his total time?
A police car is traveling at a velocity of 16.0 m/s due north, when a car zooms by at a constant speed of 50 m/s due north. After a reaction time of 0.700 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s2. Including the reaction time, how long does it take for the police car to catch up with the speeder?
An adult on a bicycle approaches a stop sign and applies the brakes to slow to a stop. If the bicycle and adult were originally traveling at 7.36 m/s and the brakes cause a deceleration of magnitude 2.79 m/s2, what distance is required for the person to stop the bicycle?
A train is traveling down a straight track at 20 m/s when the engineer applies the brakes, resulting in an acceleration of −1.0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied?