A car is approaching a traffic light at 20 m/sec. The driver takes 1 sec to...
Suppose a car is traveling at +16.0 m/s, and the driver sees a traffic light turn red. After 0.225 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where the driver first notices the red light?
Suppose a car is traveling at +17.6 m/s, and the driver sees a traffic light turn red. After 0.315 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 6.00 m/s2. What is the stopping distance of the car, as measured from the point where the driver first notices the red light?
A car is traveling at 20.0 m/s, and the driver sees a traffic light turn red. After 0.6 s (the reaction time), the driver applies the brakes, and the car accelerates at -6.1 m/s What is the stopping distance of the car, as measured from the point where the driver first sees the red light? ning: 1 of 1.00 uestion Answer Choose.. Check
The city is trying to figure out how long the traffic light should stay yellow at an intersection. The speed limit on the road is 45.0 km/h and the intersection is 23.0 m wide. A car is traveling at the speed limit in the positive direction and can brake with an acceleration of ?5.20 m/s2. (a) If the car is to stop on the white line, before entering the intersection, what is the minimum distance from the line at which...
8. Multiple Choice Question Suppose the reaction time at a traffic light that a driver takes to brake is normally distributed with mean = 1.25 seconds and standard deviation o = 0.2 seconds. What is the probability that the time to react to a red traffic light will be larger than 1.75 seconds? A. 0.1054 B. 0.2397 C. 0.3456 D. 0.0062 E. 0.0538 9. Multiple Choice Question Consider the discrete random variables X and Y with the following joint probability...
A car is travelling north at a speed 12.9 m/s toward an intersection when the traffic light turns red. It takes the car 4.2 seconds to stop. (a) What is magnitude of the car’s average acceleration? (b) What is the direction of the car’s average acceleration? * east * south * north * west
1. Traveling down a long, straight road late at night, a driver notices a light approaching in the distance. After a bit the driver notices that the single light has split into two distinct headlights. Estimate the maximum distance the approaching car can be assuming that the driver’s pupils are 4 mm in diameter, the approaching car’s headlights are 5 ft apart, the headlights emit primarily 580 nm wavelength light, and that the driver’s eyesight is diffraction limited. 2. After...
A person driving her car at 49.0 km/hr approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 1.80 s before turning to red, and she is a distance D = 35.0 m away from the near side of the intersection. If she decides to stop, how far from the intersection will she come to a stop? The intersection is W =11.0 m wide. Her car's maximum deceleration is -5.70 m/s2. Ignore...
A truck traveling at 50 km/hr approaches a car stopped at a red light. When the truck is 100 m from the car, the light turns green and the car immediately begins to accelerate at 2 m/s2 to a final speed of 100 km/hr. A) • How long does it take for the car to reach its maximum speed? B)During this time, how far does the car travel? C)What is the distance between the truck and the car 20 seconds...
A car moving at 48.326 mph approaches an intersection and the driver observes the light go yellow. The driver's reaction time is 0.189 s. If the car can brake at a maximum acceleration of --2.511 m/s2, what is the minimum stopping distance in feet?