A lead ball is dropped in a lake from a diving board 5.20 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.80 s after it is dropped. (a) How deep is the lake? What are the (b) magnitude and (c) direction (up or down) of the average velocity of the ball for the entire fall? Suppose that all the water is drained from the lake.The ball is now thrown from the diving board so that it again reaches the bottom in 4.80 s.What are the (d) magnitude and (e) direction of the initial velocity of the ball?

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 lead ball is dropped in a lake from a diving board 5.20 m
above the water. It hits the water with a certain velocity and then
sinks to the bottom with this same constant velocity. It reaches the
bottom 4.80 s after it is dropped. (a) How deep is the lake? What
are the (b) magnitude and (c) direction (up or down) of the average
velocity of the ball for the entire fall? Suppose that all the water
is drained from the lake.The ball is now thrown from the diving
board so that it again reaches the bottom in 4.80 s.What are the
(d) magnitude and (e) direction of the initial velocity of the ball?

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