A ball is released 20m from someone on ground and goes up at 2 m/s. How fast is the distance between ball and observer increasing when ball is 5 m above ground
A ball is released 20m from someone on ground and goes up at 2 m/s. How fast is the distance between ball and observer increasing when ball is 5 m above ground
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section6.3: Relative Velocity
Problem 27PP
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A ball is released 20m from someone on ground and goes up at 2 m/s. How fast is the distance between ball and observer increasing when ball is 5 m above ground
Expert Solution
Step 1
Let the initial velocity of the ball be u and the time taken by the ball to reach a point 5 m above the ground be t.
Note that at the maximum height from the ground the ball final velocity v of the ball becomes zero.
Firstly, the maximum vertical distance traveled by the ball with this speed is given by the following equation.
With this value of the initial velocity, the ball cannot reach the up to vertical distance of 5 m above the ground.
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