A car moving in one dimension travels from point A to point B at an average speed of 40 km/h. It then reverses direction and moves from point B back to point A at 20 km/h. Its average speed (in km/h) over the entire trip is

A car moving in one dimension travels from point A to point B at an average speed of 40 km/h. It then reverses direction and moves from point B back to point A at 20 km/h. Its average speed (in km/h) over the entire trip is

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section2.1: Average Velocity

Problem 2.1QQ: Under which of the following conditions is the magnitude of the average velocity of a particle...

See similar textbooks

Related questions

Q: Under which of the following conditions is the magnitude of the average velocity of a particle…

A: The expression to calculate the average speed of the particle is given by, Va=DT Here, D is the…

Q: Determine the magnitude of the displacement (in meters) of an object which accelerates from rest at…

Q: While on a car trip of 2000 km, you travel half of the distance at 120 km/hr and the other half at…

Q: A delivery truck leaves the depot at 9am, drives 20km and arrives at 9:30. At 10am it drives another…

Q: A Canadian goose flew 845 km from Southern California to Oregon with an average speed of 28.0 m/s.…

Q: You are walking down a straight path in a park and notice there is another person walking some…

Q: you are walking at the same speed of 1.17 m/s.1.17 m/s. Suddenly, you notice a wallet on the ground.…

Q: An object that starts moving from point k of a circular runway with its center point O of magnitude…

Q: At a certain instant, train A is 60 km north of train B. A is travelling south at a rate of 20 km/hr…

A: Distance = speed ×time

Q: A horse and a squirrel participate in a race over a 2.20 km long course. The horse travels at a…

Q: For the winter, a duck flies 10 m/s due south against a gust of wind with a velocity of 2.5 m/s.…

Q: An object initially traveling at 20. meters per second south decelerates uniformly at 6.0 meters per…

Q: A bowling ball travelling with a constant velocity hits the pins at the end of a bowling lane 18.29m…

Q: While traveling at 89.52 km/h, a driver drops her cell phone on the floor of the car. She reaches…

Q: An object is dropped from rest and takes 2.83 seconds to reach the ground below. From what distance…

A: Given Data: The initial velocity of an object is, u=0 m/s The time required to reach below the…

Q: Which statement describes an object travelling with uniform velocity? O A) An object moves with…

A: The velocity is a vector quantity. The vector quantity contain direction in it. Option A will be…

Q: particle travelled 3.9 m north then turned west and travelled 9.5 m in that direction and lastly,…

Q: : An automobile starting from rest speeds up to 40 meters per second with a constant acceleration of…

Q: The Moon is about 3.8 x 108m from Earth. Traveling at the speed of light, 3.0 x 108 m/s, how long…

Q: A person travels by car from one city to another with different constant speeds between pair of…

A: v1 = 80 km/hr , t1 = 30 min v2 = 100 km/hr , t2 = 12 min v3 = 40 km/hr , t3 = 45 min v4 = 0 km/hr ,…

Q: travels at a constant velocity at 25 m/s and overtakes it's stationary car 'B'. Two seconds later…

A: Let when car B catches car A Time taken by car A = t sec As per question Time taken by car B =…

Q: At 8:00 AM ship S1 is 20 km due north of ship S2. Ship S1 sails south at a rate of 9 kph and ship S2…

A: Draw the schematic diagram of the system.

Q: An airplane undergoes the following displacements, all at the same altitude: First, it flies 59.0 km…

A: Given value--- first distance = 59 km , 30 degree E of N. second distance = 58 km , South. third…

Q: A police officer leaves his station on a north-south freeway at 9 a.m.,traveling north (the positive…

A: The police officer traveled 40 mi north between 9 a.m. and 10 a.m. and 20 mi south between 10 a.m.…

Q: A stone is dropped from top of a building that is 19.6 metres from the ground. Before the stone…

Q: Two cars leaves the same city at the same time traveling at right angles with respect to each other…

Q: A particle travelled 3.9 m north then turned west and travelled 9.5 m in that direction and lastly,…

Q: An object is snot upwards from ground level with an initial velocity of 3 meters per second; it is…

Q: A bee flies from a petunia to a marigold at an average speed of 3 feet per second. Immediately upon…

Q: The speed limit sign in the nearest road in your neighborhood is 30kph (kilometers per hour). Who…

Q: Old faithful geyser in Yellowstone national park shoots water hourly to a height of 40 meters. With…

Q: You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h…

A: SOlution: Given that v1 = 105 km/h t1 = 1 h 50 min v2 = 71 km/h

Q: A basketball player runs 7.00 m due north, then 5.00 m in a direction 30° north of west, and finally…

Q: A bird flew 650 km from Manila to Pampanga with an average speed of 28.0 m/s. How long, in hours,…

A: Given: The distance traveled by the bird is 650 km. The average speed of the bird is 28 m/s.

Q: When speed and direction remain the same throughout a motion, this is called... A. accelerated…

A: If speed is expressed along with its direction, it is called velocity.

Q: A motorcycle starts its trip along a straight path from position x0 = 5m with a speed of 8m/s at a…

A: initial position (xo) = 5 m initial speed (u) = 8 msnew position (x) = 8.5 m speed at new position…

Q: A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long.…

A: Given Data : The time after which the bowler hears the sound is given as T = 2.61s The length of…

Q: An auto travels going to Roxas City at a rate of 25 km/hr for 0.045 hour , then at 50 km/hr for…

Q: Manong Edmond, a jeepney driver, is travelling from Manila City Hall to UST at a constant velocity…

Q: What quantity describes how quickly you change how fast you’re traveling, or how quickly you change…

Q: An object attains a velocity of 5 m/s by moving in a straight line with an acceleration that varies…

A: The acceleration and the velocity are related as v = ∫a.dt The position and the velocity are related…

Q: where f (t) is measured in miles per hour, and t is measured in hours, with t = 0 corresponding to 6…

A: Since it is a problem to find maximum and minimum points, it is a type of absolute extrema problem.…

Q: A rock is tossed vertically to a maximum height of 2 m. How long is it in the air? 1.3 s 0.92 s…

Q: You leave Calgary at 09:00 hrs in the morning for Banff. The distance Calgary-Banff = 160 Km. The…

A: Distance to be travelled, d=160km Maximum speed, v=110km/h Let time required for the journey be t.

Q: A car travels 20. meters east in 1.0 second. The displacement of the car at the end of this…

A: The displacement is a vector quantity. It is always associated with direction.

Q: An airplane decelerates at a constant rate of 4.92 m/s when it landed on the runway of an airport.…

Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

The Shanghai maglev train connects Longyang Road to Pudong International Airport, a distance of 30 km. The journey takes 8 minutes on average. What is the maglev train’s average velocity?
Under which of the following conditions is the magnitude of the average velocity of a particle moving in one dimension smaller than the average speed over some time interval? (a) A particle moves in the +x direction without reversing. (b) A particle moves in the x direction without reversing. (c) A particle moves in the +x direction and then reverses the direction of its motion. (d) There are no conditions for which it is true.
In reaching her destination, a backpacker walks with an average velocity of 1.31 m/s, due west. This average velocity results, because she hikes for 6.93 km with an average velocity of 2.06 m/s due west, turns around, and hikes with an average velocity of 0.688 m/s due east. How far east did she walk (in kilometers)?
An auto travels going to Roxas City at a rate of 25 km/hr for 0.045 hour , then at 50 km/hr for 0.056 hr, and finally at 20 km/hr for 0.015 hour. Find the total distance covered in km and the velocity for the complete trip.
A car enters the freeway with a speed of 8 m/s and accelerates uniformly for 3.5 km in 2.5 min. How fast is the car moving after this time?
At a certain instant, train A is 60 km north of train B. A is travelling south at a rate of 20 km/hr while B is travelling east at 30 km/hr. How fast is the distance between them changing 1 hour later?
A stone is dropped from the deck of a bridge. The sound of the splash reached the deck 3 secs later. The speed of sound is 342 m/s in still air. Which of the following gives the time the stone travels from the deck to the water surface before the splash? A) 0.288 sec B) 8.821 sec C) 4.181 sec D) 3.188 sec E) 1.881 sec F) 2.881 sec
A bee flies from a petunia to a marigold at an average speed of 3 feet per second. Immediately upon reaching the marigold the bee turns around and flies back to the petunia at an average speed of 6 feet per second, following his original path. What was the bee’s average speed for the round trip? a. 3 feet per second b. 4 feet per second c. 6 feet per second d. 4.5 feet per second
At a certain instant, train A is 60 km north of train B. A is travelling south at a rate of 20 km/hr while B is travelling east at 30 km/hr. How fast is the distance between them changing 1 hour later? A. 2 km/hr B. 4 km/hr C. 3 km/hr D. 5 km/hr
A man walks on sand at speed 1.20 m/s over a distance of 48.0 m, after which he walks on pavement for 102.0 m. How fast must he walk on the pavement so that is average speed for his entire trip is 2.00 m/s?
A race car completes a lap on a 1600 m long track with an average speed of 250 km/h. If the car's average speed on the first half of the track was 230 km/h, what was its average speed (in km/h) on the second half?
A car travelling at 70 km/h is 20 m in front of you. You want to pass them and know that your speed of 90 km/h is appropriate. You know that you need to be 20 m ahead of the car to merge safely back into the lane. What distance will you have traveled while passing the car? Question 8 options: 158.4 m 162.7 m 171.2 m 178.6 m