A lead ball is dropped in a lake from a diving board 5.20 m above the water.
Question:
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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Step by Step Answer:
a Let the height of the diving board be h We choose down as the y direction and set the coordinate o...View the full answer
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Related Book For 
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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