1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 20 15 10 C A 0. 30 40 50 20 Time (s) 10 2. Sketch a velocity-time graph for the following motions: a) a city bus that is moving at constant velocity; b) a wheelbarrow that is slowing down at a constant rate of acceleration while moving in a negative direction Speed (m/s) 25

1. Refer to the velocity-time graph of a jogger. The positive direction is away from the jogger's home. Rank the four distances for the time intervals, A, B, C, D in decreasing order. Explain your answer. 20 15 10 C A 0. 30 40 50 20 Time (s) 10 2. Sketch a velocity-time graph for the following motions: a) a city bus that is moving at constant velocity; b) a wheelbarrow that is slowing down at a constant rate of acceleration while moving in a negative direction Speed (m/s) 25

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 64P: An express train passes through a station. It enters with an initial velocity of 22.0 m/s and...

See similar textbooks

Similar questions

The speed limit on some interstate highways is roughly 100 km/h. (a) What is this in meters per second? (b) How many miles per hour is this?
A car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it exceeding the 90 km/h speed limit?
Clay Matthews, a linebacker for the Green Bay Packers, can reach a speed of 10.0 m/s. At the start of a play, Matthews runs downfield at 45 with respect to the 50-yard line and covers 8.0 m in 1 s. He then fins straight down the field at 90 with respect to the 50-yard line for 12 m, with an elapsed time of 1.2 s. (a) What is Matthews’ final displacement from the start of the play? (b) What is his average velocity?
An express train passes through a station. It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150m/s2 as it goes through. The station in 210.0 m long. (a) How fast is it going when the nose leaves the station? (b) How long is the nose of the train in the station? (c) If the train is 130 m long, what is the velocity of the end of the train as it leaves? (d) When does the end of the train leave the station?
A motorist drives for 35.0 minutes at 85.0 km/h and then stops for 15.0 minutes. He then continues north, traveling 130. Km in 2.00 h. (a) What is his total displacement? (b) What is his average velocity?
A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s to take off and it accelerates from rest at an average rate of 0.35m/s2 , how far will it travel before becoming airborne? (b) How long does this take?
A car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it exceeding the 90 km/h speed limit?
A student writes, "A bird that is diving for prey has a speed of -10 m / s." What is wrong with the student's statement? What has the student actually described? Explain.
Dwight decides to race around the perimeter of the Scranton business parkin an effort to beat another employee’s best running time. Assuming heruns with an average velocity of 10 ft/s, and he completes 4 laps in 5minutes,a. What is the perimeter of the business park in feet?b. In meters?( 1 ft = 0.3048 m )
An airplane is delivering food to a small island. It flies 100 m above the ground at a speed of 160 m/s. a. Sketch the situation showing the flight and the parcel. Draw a motion diagram for the parcel during its flight showing both horizontal and vertical componenets of the velocity along the parcel's trajectory in one diagram. b. Where should the parcel be releasedso it lands on the islandNeglect air resistance. c. Estimate whether you should release the parcel earlier or later if there is air resistance. Explain. You may include a motion diagram and a force diagram in your explanation. 0:48 am
1. A vehicle drives at a constant speed of 215km/h for 42.3 seconds, accelerates by 29.4m/s2 for 5.00s. And finally, slows down to the stop. The entire movement takes 88.6 seconds. A. Make a vector-speed diagram or graph as a function of time for the situation. B. Determine the maximum speed. C. Determine the total displacement. 2. Two 9.82km separate trains travel on parallel tracks in opposite directions, one to the other. Train A has a speed of 5.87 km/h at departure and accelerates at a rate of 0.29m/s2. Train B has a speed of 20.3m/s at departure and an acceleration of 0.69m/s2. A. Make a diagram or graph position according to time for the situation. B. Determine when trains meet.
©20. A railroad freight yard switch engine on a straight track trav- els 1000. m to the end of the track, then back 600. m, then forward 300. m. a. What is the switch engine's final displacement from its starting position? b. How far did it travel?