A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 50.0 min at 85.0 km/h, 7.0 min at 60.0 km/h, and 45.0 min at 55.0 km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along the route. km

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 50.0 min at 85.0 km/h, 7.0 min at 60.0 km/h, and 45.0 min at 55.0 km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along the route. km

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A car moves on a straight road such that its position from a reference point is given by the following function:{ x(t) = 3 + 5t + 2t2 + 0.4t3, y(t) = 0, z(t) = 0 }where t is in seconds and x in meters. Find the average velocity, in meters per second, in the x-direction between t1 = 0.25 s and t2 = 1.85 s. Find the average acceleration, in meters per second squared, in the x-direction between t1 = 0.25 s and t2 = 1.85 s.
In good weather the drive from Seattle to Spokane,Washington, on Interstate 90 takes 3 h 51 min at an average speed of 105 km/h.In winter, however, it is not unusual to average only 80 km/h.How long would the trip take at this average speed?
A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a constant speed of 640 mi/h, how far is she from her starting position?Your answer is______mi;
A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other, taking 2.50 s.Then security agents appear, and the man runs as fast as he can back along the sidewalk to his starting point, taking 10.0 s.What is the ratio of the man’s running speed to the sidewalk’s speed?
a person walks for 1.00 hr at a speed of 2.00 mi/hr. he stops for 1.00 hr. he then starts walking again and covers 2.00 mi at a speed of 1 mi/hr. find the average speed of the trip answer with Correct number of significant digits
The world record for the hundred meter dash is 9.58 s.What is the corresponding average speed in units of m/s,km/h,ft/s,and mi/h? At this speed, how long would it take to run 1.00 x 102 yards?
a man walks south at a speed of 2.00m / s for 15.0 minutes. then he turns and walks north at a distance of 2000m in 15.00 minutes. What is the average speed of the man during his entire movement?
When the legal speed limit for the New York Thruway was increased from 55 mi/h to 65 mi/h, how much time was saved by a motorist who drove the 553 km between his entrance and the New York City exit at the legal speed limit?
A man travels a certain distance at a speed of 40 km/ hr and returns by increasing his speed by 50% what is his average speed for the whole journey? (a) 50 km/hr (c) 48 km/hr (b) 46 km/hr (d) 52 km/hr
A student drives for 34 min at 67km/h, 57 min at 54 km/h, and 56 s at 10 km/h and spends 48 min eating lunch and buying gas. Determine the distance between the initial and final cities along the route. 89 km/h 177 km/h 74 km/h 125 km/h
A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22 minute rest stop. If the persons average speed is 77.8 km/h how much time is spent on the trip and what distance did they travel?
An airplane travels 2100 km at a speed of 720 km/h and then encounters a tailwind that boosts its speed to 990 km/h for the next 2800 km. What was the total time for the trip? What was the average speed of the plane for this trip?[Hint: Does Eq. 2–11d apply?