Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Textbook Question
Chapter 2.6, Problem 2.5CE
In our everyday experience, we sometimes use the phrase “as the crow flies.” Does this expression refer to total distance traveled, or does it refer to magnitude of the displacement?
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A person walks 8 miles east and then walks 8 miles west from that point? What distance did he walk, and what was his displacement?
You watch a player on the OSU football team and observe that he runs for 2.62 km. Is the displacement of the player the same as the distance traveled?
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Which among the following definitions is/are FALSE?I. Distance has a magnitude and but no direction.II. Average velocity is equal to the quantity: total displacement divided by the total time.III. Instantaneous velocity is the slope of the velocity vs. time graph.A. I only B. II only C. III only D. II and III
Chapter 2 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 2.2 - In each of the five motion diagrams shown in...Ch. 2.3 - For each of the following, give the vector...Ch. 2.5 - Figure 2.11 shows the motion of various objects:...Ch. 2.6 - The top marathon runners complete the race in...Ch. 2.6 - In our everyday experience, we sometimes use the...Ch. 2.6 - Prob. 2.6CECh. 2.8 - Kinematics graphs are great for showing how a...Ch. 2 - Is the Moons motion around the Earth...Ch. 2 - An animals tracks are frozen in the snow (Fig....Ch. 2 - Problems 3 and 12 are paired. G A particle moves...
Ch. 2 - Prob. 4PQCh. 2 - For each of the following velocity vectors, give...Ch. 2 - In the traditional Hansel and Gretel fable, the...Ch. 2 - After a long and grueling race, two cadets, A and...Ch. 2 - Prob. 8PQCh. 2 - Elisha Graves Otis invented the elevator brake in...Ch. 2 - As shown in Figure 2.9, Whipple chose a coordinate...Ch. 2 - Prob. 11PQCh. 2 - Prob. 12PQCh. 2 - A race car travels 825 km around a circular sprint...Ch. 2 - Prob. 14PQCh. 2 - A train leaving Albuquerque travels 293 miles, due...Ch. 2 - Prob. 16PQCh. 2 - The position of a particle attached to a vertical...Ch. 2 - Prob. 18PQCh. 2 - Prob. 19PQCh. 2 - Prob. 20PQCh. 2 - During a relay race, you run the first leg of the...Ch. 2 - Prob. 22PQCh. 2 - Prob. 23PQCh. 2 - Prob. 24PQCh. 2 - During a thunderstorm, a frightened child is...Ch. 2 - Scientists and engineers must interpret problems...Ch. 2 - Prob. 27PQCh. 2 - Prob. 28PQCh. 2 - A In attempting to break one of his many swimming...Ch. 2 - A The instantaneous speed of a particle moving...Ch. 2 - A particles velocity is given by vy(t)=atj, where...Ch. 2 - Prob. 32PQCh. 2 - Figure P2.33 shows the y-position (in blue) of a...Ch. 2 - A particles position is given by z(t) = (7.50...Ch. 2 - Prob. 35PQCh. 2 - Two sprinters start a race along a straight track...Ch. 2 - An electronic line judge camera captures the...Ch. 2 - During a bungee jump, a student (i) initially...Ch. 2 - Prob. 39PQCh. 2 - Prob. 40PQCh. 2 - Prob. 41PQCh. 2 - Prob. 42PQCh. 2 - Prob. 43PQCh. 2 - Prob. 44PQCh. 2 - A computer system, using a preset coordinate...Ch. 2 - In Example 2.6, we considered a simple model for a...Ch. 2 - A uniformly accelerating rocket is found to have a...Ch. 2 - Prob. 48PQCh. 2 - A driver uniformly accelerates his car such that...Ch. 2 - Car A and car B travel in the same direction along...Ch. 2 - Accelerating uniformly to overtake a slow-moving...Ch. 2 - An object that moves in one dimension has the...Ch. 2 - A particle moves along the positive x axis with a...Ch. 2 - Case Study Crall and Whipple attached a fan to a...Ch. 2 - Prob. 55PQCh. 2 - The engineer of an intercity train observes a rock...Ch. 2 - A pebble is thrown downward from a 44.0-m-high...Ch. 2 - In a cartoon program, Peter tosses his baby,...Ch. 2 - Tadeh launches a model rocket straight up from his...Ch. 2 - Prob. 60PQCh. 2 - In the movie Star Wars: The Empire Strikes Back,...Ch. 2 - A worker tosses bricks one by one to a coworker on...Ch. 2 - A rock is thrown straight up into the air with an...Ch. 2 - Prob. 64PQCh. 2 - A sounding rocket, launched vertically upward with...Ch. 2 - Prob. 66PQCh. 2 - While strolling downtown on a Saturday Afternoon,...Ch. 2 - Prob. 68PQCh. 2 - A trooper is moving due south along the freeway at...Ch. 2 - A dancer moves in one dimension back and forth...Ch. 2 - The electrical impulse initiated by the nerves in...Ch. 2 - Two cars leave Seattle at the same time en route...Ch. 2 - An object begins to move along the y axis and its...Ch. 2 - Prob. 74PQCh. 2 - Prob. 75PQCh. 2 - Two carts are set in motion at t = 0 on a...Ch. 2 - Prob. 77PQCh. 2 - Cars A and B each move to the right with constant...Ch. 2 - Prob. 79PQCh. 2 - Prob. 80PQCh. 2 - Prob. 82PQCh. 2 - Prob. 83PQCh. 2 - A Write expressions for the average acceleration...Ch. 2 - Prob. 85PQCh. 2 - Prob. 86PQCh. 2 - In 1898, the world land speed record was set by...Ch. 2 - In Example 2.12, two circus performers rehearse a...Ch. 2 - Prob. 89PQ
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- Find the following for path A in Figure 2.59: (a) The distance traveled. (b) The magnitude of the displacement from start to finish. (c) The displacement from start to finish.arrow_forwardIf you divide the total distance traveled on a car trip (as determined by the odometer) by the elapsed time of the trip, are you calculating average speed or magnitude of average velocity? Under what circumstances are these two quantities the same?arrow_forwardWhat are the magnitude and direction of the total displacement for a treasure hunt where you need to go 6 paces east and 3 paces north? Assume that each pace is 0.500 m in length. Let east be the positive x direction and north be the positive y direction.arrow_forward
- The displacement-time graph of a moving object is a straight line. Then a. its acceleration may be variable b. its velocity may be uniform c. both its velocity and acceleration may be uniform d. its acceleration may be uniformarrow_forwardGive a situation in which there are clear distinctions among distance travelled, displacement and magnitude of displacement.arrow_forwardDuring training, Hidilyn Diaz sprints 30 m East and then 40 m West. Which gives the distance travelled and the displacement from the starting point? what is the distance and displacement?arrow_forward
- A three-toed sloth is the slowest moving land mammal. On the ground, the sloth moves at an average speed of 0.037 m/sec, considerably slower than the giant tortoise, which walks at 0.076 m/sec. After 12 minutes (720 seconds) of walking, how much further would the tortoise have gone relative to the sloth?arrow_forwardIs this the average velocity overall?I do not want to know a specific segment but the overall average velocityarrow_forwardA man is lost in a thick forest. Confused and clueless as to what direction to take, he walks a certain distance and then turns and walks a certain distance again, and then turns and walks a certain distance. After his last step, he notices that he has just reached the point where he has started. If his first two displacements are respectively 5.0 m, 25 degrees North of East and 24.0 m, 30 degrees West of North, what is his third displacement?arrow_forward
- The coordinates (in meters) of a rabbit’s position as functions of time t (in seconds)are given by:x(t) = −3t2 + 4t − 2y(t) = 6t2 − 4t(a) What are the magnitude and direction of the instantaneous velocities at t = 0and t = 4 seconds?(b) Find the magnitude and direction of the acceleration of the rabbit at t = 1and t = 3 sec.arrow_forwardAn object is thrown from a level field with initial upward speed 17 m/s and forward speed 9.9 m/s. How far (in m) from its launch point is its landing place? You do not need to put the unit in the answer, just the number. As usual, ignore air resistance, etc; use the acceleration due to gravity as 9.8 meters per second squared.arrow_forwardAt time t=0 s, an object is observed at x=0 m; and it’s position along the x axis follows this expression: x = -4t + t^2, where the units for distance and tiMe are meters and seconds respectfully. What is the objects displacement between t =1.0s and t= 5sarrow_forward
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