Traveling at 60 m/s I see an old person walk into the road 300 meters ahead and the car slows at a rate of 6.5 m/s ^ 2 when I apply brakes . What is the fate of the pensioner ?
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A driver is traveling at 40m/s when they see a speed limit sign that says 10 m/s. One second later they hit the brakes and the car slows down at a rate of 5 m/s2. How far behind is the sign from the car when the car reaches the legal speed limit?
Alcohol consumption slows people's reaction times. In a controlled government test, it takes a certain driver 0.39 s to hit the brakes in a crisis when unimpaired and 1.19 s when drunk. When the car is initially traveling at 93 km / h, how much farther (in meters) does the car travel before coming to a stop when the person is drunk compared to sober?
A driver is traveling at 30.0 m>s when he sees a moose crossing the road 80.0 m ahead. The moose becomes distracted and stops in the middle of the road. If the driver of the car slams on the brakes, what is the minimum constant acceleration he must undergo to stop short of the moose and avert an accident?
Ralph is driving at a constant 70.0 mi/hr (31.3 m/s) along a straight section of Route 3 North. The car directly ahead of him is also moving at 70.0 mi/hr. The front bumper of Ralph's car is located 12.00 m from the rear bumper of the car ahead when, at t0, the driver of the car ahead applies his brakes and begins to slow down at a steady rate of 6.00 2, towards the posted speed limit of 50.0 mi/hr...
The speed limit in a school zone is 45 km/h. A driver traveling at this speed sees a child run onto the road 20 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 11.0 m/s2. If the driver's reaction time is 0.55 s, will the car stop before hitting the child?What is the stopping distance of the vehicle?
Alcohol consumption slows people's reaction times. In a controlled government test, it takes a certain driver ?1=0.31 s to hit the brakes in a crisis when unimpaired and ?2=1.19 s when drunk. If the car is initially traveling at ?=83 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?
Suppose you are driving a car in a counterclockwise direction on a circular road whose radius is r 28 m/s (about 63 mi/h) 385 m (see the figure). You look at the speedometer and it reads a steady T(decreasing) (a) Constant angular speed (b) Decreasing angular speed Concepts (i) Does an object traveling at a constant tangential speed (for example, vT= 28 m/s) along a circular path have an acceleration? Yes No (ii) Is there a tangential acceleration aT when...
A car driving 20m/s sees a deer in the road and brakes, slowing the car at a rate of -12 m/s^2. How long does it take the car to stop? If the deer is 10 meters from the car when it brakes, does the car hit it? Would the deer survive if the acceleration rate had been -15 m/s^2?
Please help 12-17. Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 12 ft/s. It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, I dece lerates at 15 ft/s. Determine the minimum distance d be tween the cars so as to...
Alcohol consumption slows people's reaction times. In a controlled government test, it takes a certain driver t - 0.35 s to hit the brakes in a crisis when unimpaired and 12 1.05 s when drunk. If the car is initially traveling at v 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? additional distance traveled TOOLS x10