A car starts from rest, then accelerates at a constant rate over a distance of 52 m. It then immediately decelerates at a constant rate over a distance of 86 m. The entire trip lasts a total duration of 29.8 s. What were the magnitudes of the car s accelerations for the speedup and slowdown stages respectively? 2.89 m/s^2, then 1.74 m/s^2 2 0.82 m/s^2, then 0.50 m/s^2 3 1.74 m/s^2, then 2.89 m/s^2

A car starts from rest, then accelerates at a constant rate over a distance of 52 m. It then immediately decelerates at a constant rate over a distance of 86 m. The entire trip lasts a total duration of 29.8 s. What were the magnitudes of the car s accelerations for the speedup and slowdown stages respectively? 2.89 m/s^2, then 1.74 m/s^2 2 0.82 m/s^2, then 0.50 m/s^2 3 1.74 m/s^2, then 2.89 m/s^2

Name: A car starts from rest, then accelerates at a constant rateover a dis
Uploaded: 2024-03-05T11:56:34.000Z
Channel: Bartleby
Description: A car starts from rest, then accelerates at a constant rateover a distance of 52 m. It then immediately decelerates ata constant rate over a distance of 86 m. The entire triplasts a total duration of 29.8 s. What were the magnitudesof the car s acce

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 42P: An airplane, starting from rest, move down the runway at constant for 18 s and then takes off at a...

See similar textbooks

Similar questions

A typical male sprinter can maintain his maximum accelerationfor 2.0 s, and his maximum speed is 10 m/ s. After he reachesthis maximum speed, his acceleration becomes zero, and then he runs atconstant speed. Assume that his acceleration is constant during the first 2.0 s of the race, that he starts from rest, and that he runs in a straightline. How far has the sprinter run when he reaches his maximum speed?
From t=0 tot 3.46 min, a man stands still, and from t = 3.46 min to t = 6.92 min, he walks briskly in a straight line at a constant speed of 2.09 m/s. What are (a) his average velocity Vag and (b) his average acceleration og in the time interval 1.00 min to 4.46 min? What are (c) va and (daag in the time interval 2.00 min to 5.46 min? (a) Number (b) Number i (c) Number i (d) Number Units m/s H !Units m/s^2 Units m/s !Units m/s^2 The tolerance for answers is 1 in the 3rd significant digit. V V V
The position of a particle is r (t) = (3.0t i+5.0j-6.0tk) m. r2(t)=(3.0t2/+5.0jh-6.0tkJm. (a) Determine its velocity and acceleration as functions of time. (b) What are its velocity and acce le ration at time t = 0?
An airplane, starting from rest, move down the runway at constant for 18 s and then takes off at a speed of 60 m/s. What is the average acceleration of the plane?
A particle moves in a straight line withe a constant acceleration of 4.05 m/s2 in the positive direction. If the initial velocity is 2.23 m/s in the positive direction, then how long, in seconds, does it take to move 7.66 m? And what is the particles final velocity in m/s?
A bike from rest t=0, speeds up with a constant acceleration 0f 1.54 for 6 seconds. Then with the same uniform speed for another 6 seconds when it speeds up to a constan acceleration of 2.13 until it reaches a speed of 20.0 ms. 1.How long does it take for the bike to reach 20.0 2. Whag is its total displacement?
A peregrine falcon drops from rest off the top of the StantecTower, which is 250.8 m tall. It accelerates in the downwarddirection due to gravity at a rate of 9.81 m/s2 (assume no airresistance).a) How long did it take the peregrine falcon to reach the ground? b) What is its velocity after 2.75 s?
The graph below plots the position versus time for a particular partide moving along the x-axis. What is the average velocity over the following time intervals (in m/s)? (Indicate the direction with the signs e your answers.) x (m) 16 14 12 10 A 6 4 2 -2 (a) o to 2.00 ✔m/s 3 4 r(s) D (b) 0 to 4.00 s S What is the definition of average velodty? What is the initial and find tine? What is the time interval? Read the initial and final positions from the graph, then calculate the displacement from the ori m/s (o) 2.00 s to 4.00 4 What is the definition of average velocity? What is the initial and final time? What is the time interval? Read the initial and final positions from the graph, the calculate the displacement from the grash mys
The thickest and strongest chamber in the huma.1heart is the left ventride, responsible during systole forpumping oxygenated blood through the aorta to rest. of thebody. Assume aortic blood starts from rest a.1d accelerates at22.5 m/s2 to a peak speed of 1.05 m/s. (a) How far does theblood travel during this acceleration? (b) How much time isrequired for the blood to reach its peak speed ?
The position of an object is given by x = at3 - bt2 + ct, where a = 4.1 m/s3, b = 2.2 m/s2,c = 1.7 m/s, and x and t are in SI units. What is the instantaneous acceleration of the objectwhen t = 0.7 s?
Elana walks at a speed of 1.3 m/s into a train terminal and realizes that her train is already pulling out of thestation. She starts running with an acceleration of 3.0 m/s^2 in a straight line toward the train, which has a10 m head start and moves with a constant leisurely velocity of 2.0 m/s in the same direction. If she runswith this acceleration for 2.0 s and then maintains her speed, how long (total time) does it take her to reachthe train? How far does she have to run to reach the train?
From t = 0 to t = 5.00 min, a man stands still, and from t = 5.00 min to t = 10.0 min, he walks briskly in a straight line at a constant speed of 2.20 m/s. What are (a) his average velocity vavg and (b) his average acceleration aavg in the time interval 2.00 min to 8.00 min? What are (c) vavg and (d) aavg in the time interval 3.00 min to 9.00 min? (e) Sketch x versus t and v versus t, and indicate how the answers to (a) through (d) can be obtained from the graphs.