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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
11 Nov 2021

Given information

We are given that:-

The initial velocity when the person jumps off the roof,

Also, the acceleration during free fall is, .  

Height through which person falls, i:e; displacement of the person ,.    

Step-by-step explanation

Step 1.

To find the speed of the person just before he strikes the ground i:e; final velocity we use the kinematics equation;

.

   

Where is the final velocity, is the initial velocity,  is the acceleration and is the displacement. 

 

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