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14 Jan 2022

Given information

We are given that:-

Given time in the ball comes to the same height from where the ball was thrown is

 

Step-by-step explanation

Step 1.

Let us assume that the ball was thrown with a speed of  in the upward direction. Since only gravitational force acts on the particle in the downward direction, it has a constant acceleration in the downward direction.

We also know that a particle has the same magnitude of velocity when it is under a free fall at a fixed height but direction is opposite i.e., initially in the upward direction and finally in the downward direction.

Hence, the particle was thrown with a speed of  

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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