Please help with 1a A ball is thrown from the top of a building with an initial velocity of 20.0 m/s straight upward, at an initialheight of 50.0 m above the ground. The ball just misses the edge of the roof on its way down, as shown in thefigure below.(a) Find the time needed for the ball to return to the height from which it was thrownand the velocity of the ball at that instant.Analysis:1. To find the time from a to c, we can apply v = vo + at. What are the initial andfinal velocities? Hint: a→b and b→c are symmetrical.2. Can we use another way to find the time from a to c? Hint: if we can find thetime from a to b, then...t = 2.04 sI'max = 20.4 mv = (0at = 0Yo = 0vo = 20.0 mst = 4.08 sy = 0v = -20.0 m/st = 5.00 sy = -22.5 mv = -29.0 m/s50.0 m(b) Find the time needed for the ball to reach the ground and the velocity of the ball atthat instant.Analysis:1. Since we already know the time from a to c, if we can find the time from c to d,we can then find the total time needed for the ball to reach the ground.2. To find the velocity at point d, we can apply v² = vở + 2a(x – xo) for theprocess of c-d. What is the value of the displacement x – x, here? What isthe value of the acceleration here?3. We can then apply v = Vo + at to find the time from a to c.t = 5.83 sy = -50.0 mv = -37.1 m/s

SOlution: as given that inital velocity u = 20 m/s to find the time from the a t c

A ball is thrown from the top of a building with an initial velocity of 20.0 m/s straight upward, at an initial height of 50.0 m above the ground. The ball just misses the edge of the roof on its way down, as shown in the figure below. (a) Find the time needed for the ball to return to the height from which it was thrown and the velocity of the ball at that instant. Analysis: 1. To find the time from a to c, we can apply v = Vo + at. What are the initial and Ir final velocities? Hint: a→b and b→c are symmetrical. a, ------ O-----

A ball is thrown from the top of a building with an initial velocity of 20.0 m/s straight upward, at an initial height of 50.0 m above the ground. The ball just misses the edge of the roof on its way down, as shown in the figure below. (a) Find the time needed for the ball to return to the height from which it was thrown and the velocity of the ball at that instant. Analysis: 1. To find the time from a to c, we can apply v = Vo + at. What are the initial and Ir final velocities? Hint: a→b and b→c are symmetrical. a, ------ O-----

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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