45. An object moves along the arc of a circle from point A to point B (one quarter of a full circle). As the object moves, it slows down (it doesn't come to rest though). Which of the following arrows could represent the average acceleration vector for this segment of motion? B none of the above arrows may represent the average acceleration vector

45. An object moves along the arc of a circle from point A to point B (one quarter of a full circle). As the object moves, it slows down (it doesn't come to rest though). Which of the following arrows could represent the average acceleration vector for this segment of motion? B none of the above arrows may represent the average acceleration vector

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter4: Motion In Two Dimensions

Section: Chapter Questions

Problem 4.1OQ: Figure OQ4.1 shows a bird's-eye view of a car going around a highway curve. As the car moves from...

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Figure OQ4.1 shows a bird's-eye view of a car going around a highway curve. As the car moves from point 1 to point 2, its speed doubles. Which of the vectors (a) through (e) shows the direction of the cars average acceleration between these two points?
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When the motorcyclist is at A, he increases his speed along the vertical circular path at the rate of v = (0.04s) ft/s² where s is in ft. Take p = 270 ft. ▼ Part A V If he starts at V₁ = 2 ft/s where s = 0 at A, determine the magnitude of his velocity when he reaches B. = Express your answer to three significant figures and include the appropriate units. μÅ Value Units Submit Part B = P 0 O μÃ 60° Submit Also, what is his initial acceleration? Express your answer to three significant figures and include the appropriate units. Value Units Request Answer P Request Answer ? ?
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5. You notice a falcon diving straight down alongside the Boston Store building in downtown Erie. You see it pass five stories in 1.5 seconds; and, at the end, it has a downwards velocity of 15 m/s. (Its acceleration is constant, but it is NOT g). Each floor is 3 meters high. Make a labeled picture with symbols and all relevant values. Put a coordinate system on the a. picture by indicating the location of the origin and position direction. b. What is the acceleration of the bird? C. What was the initial velocity of the bird as the start of passing the 5 stories?
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Could I have help with this average speed and velocity problem. I already know the answers"average velocity = 2.7 m/s due east, average speed = 8.0 m/s" but I need a detailed explanantion on how and why because I am not understanding and getting the same answers
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1. A pilot in a small plane encounters shifting winds. He flies 26.0 kmkm northeast, then 45.0 kmkm due north. From this point, he flies an additional distance in an unknown direction, only to find himself at a small airstrip that his map shows to be 70.0 kmkm directly north of his starting point. What was the length of the third leg of his trip? What was the direction of the third leg of his trip? 2. A boat can travel 7.3 m/s in still water. It is crossing a 220 m wide river while pointed due east and the river is flowing at 3.7 m/s, north. What is the speed of the boat, relative to the shore? How long does it take to cross the river? How far downstream does the boat end up? 3. A flock of ducks is trying to migrate south for the winter, but they keep being blown off course by a wind blowing from the west at 14 m/sm/s . A wise elder duck finally realizes that the solution is to fly at an angle to the wind. If the ducks can fly at 15 m/sm/s relative to the…
6. The instantaneous speed of a figure that describes a plane trajectory is v=ti + 2tj (m/s). ( THE v ,i and the j both have arrow above them) a) Calculate the numerical value of the speed at t = 1 s and at t = 5 s. b) What is the average acceleration vector in that time interval? c) What is the acceleration at t = 5s?
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