•   A small rubber ball is launched by a compressed$-$air cannon from ground level with an initial speed of $12\mathrm{.}4$ m$/$s directly upward. Choose upward as the positive direction in your analysis. 

 

•  $($a$)$ What is the maximum height above the ground that the ball reaches? 

 

$($b$)$ How long does it take to reach the maximum height? 

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• $($c$)$ How long does it take to reach the ground after it reaches its highest point? 
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• $($d$)$ What is its velocity just before it hits the ground? $($Indicate the direction with the sign of your answer.$)$ 
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Answer rating: 100% (QA)

To solve this problem we can use the equations of motion under gravity Lets analyze each part of the ... View the full answer