A value commonly taken for the perception-reaction time of motorists is At = 1.5 s. Using this value, determine the total stopping distance for a car travelling at 30 m - s-1 (two significant figures). In calculating the stopping distance, let's assume that the vehicle continues at its initial speed for At, then decelerates to rest. A reasonable value for the deceleration in braking is (constant) 8.0 m · s-2.

A value commonly taken for the perception-reaction time of motorists is At = 1.5 s. Using this value, determine the total stopping distance for a car travelling at 30 m - s-1 (two significant figures). In calculating the stopping distance, let's assume that the vehicle continues at its initial speed for At, then decelerates to rest. A reasonable value for the deceleration in braking is (constant) 8.0 m · s-2.

Name: 2. [#232] Stopping distanceA value commonly taken for the perception-
Uploaded: 2024-03-05T11:56:34.000Z
Channel: Bartleby
Description: 2. [#232] Stopping distanceA value commonly taken for the perception-reaction time of motorists is At = 1.5 s. Using this value, determinethe total stopping distance for a car travelling at 30 m - s-1 (two significant figures). In calculating the st

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 34PE: In World War II, there were several reported cases of airmen who jumped from their flaming airplanes...

See similar textbooks

Similar questions

1. The diagram below gives the velocity-time graph for a particle travelling along the х-ахis. 60 V(m/s) 40 20 10 20 30 40 50 t (s) Calculate: (i ) the acceler ati on during the first 10s. (ii ) the total di stance travelled. (iii) the deceleration during the last 10s.
1. [#231] Accelerating vehicle You're travelling in a straight line. With a constant acceleration of 0.50 m - s, how long does it take to accelerate from 13 m -s to 18 m -s, and how far do you travel while doing so? Time = seconds Distance = metres. Separate your answers with a comma (ex: a,b)
1. An airplane flies 75 km [E] and then 15 km [S] in a total time of 0.50 h. What is the average velocity of the airplane? 180 km/h b. 130 km/h [E] c. 120 km/h[SE] d. 85 km/h e. none of above а.
3. A particle is moving along a straight line according to the equation of motion s = t³ – 40t where s is in meters. Calculate the following: (a) The instantaneous velocity at t=5sec. (b) The average velocity during the fourth second. (c) When the particle again comes to rest, what is its acceleration?
5. #264] Speeding car A car accelerates with a constant acceleration of 1.8 m s 2 along a long straight road. How long does it take the car to accelerate from 100 kph to 110 kph, and how far does it travel while doing so? [Hint: watch your units and sig figs! Because there is no other information, take the speeds as three significant figures] It takes seconds to accelerate to 110 kph. While accelerating, the car travels. m. Separate your answers with a comma. Example: a, b
1039. A car accelerates for t sec from rest to a velocity of 48 ft per sec, the accelera- tion increasing uniformly from zero to 12 ft per sec?. During the next 4 sec, the car decelerates at a constant rate to a velocity of 4 ft per sec. Sketch the a-t, v-t, and 8-t curves.
1. The skid marks made by an automobile indicated that its brakes were fully applied for a distance of 50 meters before it came to a stop. The car in question is known to have a constant deceleration of 20 meters per second squared under these conditions. How fast, in km/h, was the car traveling when the brakes were first applied?
3. A car and a jeepney, each moving at 80km/hr are approaching one another on a straight highway. After how many seconds will they meet if they were initially one kilometer apart?
4. A roller coaster, traveling with an initial-speed of 15 meters per second, decelerates uniformly at -7.0 meters per second2 to a full stop. How far does the roller coaster travel during its deceleration?
i. A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 17 m long. The bowler hears the sound of the ball hitting the pins 3.20s after the ball is released from his hands. What is the speed of the ball? The speed of sound is 340 m/s. A cnr to Iver is Low long will it taeross he River current W E [. RS ::
9. Some insurance companies are suggesting that a driver's premiums could be lowered if they were willing to have their data recorder checked periodically. If the EDR showed that they did not speed and avoided excessive accelerations they could benefit by reduced rates. Discuss the risks and benefits of this idea. [Appendix A]
15. Hello, Can you please help me with the next problem? 15. Two friends talk on the phone to meet,both come out at the same time in their respective bicycles; one of them with a speed of 25 km/h and the other with a speed of 30 Km/h. If the distance that initially separates them is 120 km:1. How far are they from each other's house?2. How long after dating do they meet? Thank you in advance!