To find the height of an overhead power line, you throw a ball straight upward.The ball passes the line on the way up after 0.75 s , and passes it again on theway down 1.5 s after it was tossed.Part AWhat is the height of the power line?Express your answer using two significant figures.h =SubmitRequest AnswerPart BWhat is the initial speed of the ball?Express your answer using two significant figures.?vo =ValueUnitsSubmitRequest Answer

Given : tup = 0.75 s tdown = 1.5 s

Answered: To find the height of an overhead power…

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)...

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A hotel elevator ascends 200 m with maximum speed of 5 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s². Part A How far does the elevator move while accelerating to full speed from rest? Express your answer with the appropriate units. 0 Value Part B Submit Request Answer µÅ 0 ☐☐ How long does it take to make the complete trip from bottom to top? Express your answer with the appropriate units. Submit Units μÅ Value Units ? Request Answer 2 ?
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A particle moves along a straight path with an acceleration of a = (4/s) m/s², where s is in meters. Part A Determine the particle's velocity when s = 6 m, if it is released from rest when s = 1 m. Express your answer to three significant figures and include the appropriate units. V= Value Submit μA Provide Feedback Request Answer Units ?
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Consider the following descriptions of the vertical motion of an object subject only to the acceleration due to gravity. Begin with the acceleration equation a(t) = ν'(t) = -g, where g = 9.8 m/s2.a. Find the velocity of the object for all relevant times.b. Find the position of the object for all relevant times.c. Find the time when the object reaches its highest point. What is the height?d. Find the time when the object strikes the ground. A stone is thrown vertically upward with a velocity of 30 m/sfrom the edge of a cliff 200 m above a river.
Part A Determine the stopping distances for an automobile going a constant initial speed of 94 km/h and human reaction time of 0.40s, for an acceleration a = -2.6 m/s². Express your answer using two significant figures. 9. X•10" d = Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining The correct answer does not depend on: m. Part B Determine the stopping distances for an automobile going a constant initial speed of 94 km/h and human reaction time of 0.40 s, for an acceleration a = -5.7 m/s². Express your answer using two significant figures. να ΑΣΦ ? d = m
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A particle P starts at time t = 0 s at the polar position x = -15 m y = 8 m. The velocity of the particle is written in the polar basis associated with its current position, and is: v = 2ê, m/s. If we have final and final, then we can find final and final with: X final symbolic expression X = ? m, yfinal ? Give your answers in symbolic form. You should use the scalar variables r_f and theta_f. Functions are available like sin(), cos(), atan2(), sqrt(), and log(), as well as the mathematical constants pi and e. The regular arithmetic operators are +, -, *, and /, and x^y means x to the power of y. 5t + k would translate to 5*t+k. Now, find the final Cartesian position of the particle at time t = 2. symbolic expression m, y = ? m m
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