Question

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Answer 1

Goku, hello. What have you done so far towards solving this problem?

Since this problem involves only vertical motion, and since metric units are involved, the pertinent equation of motion is \[s=s _{0}+g t^2+v _{o}t\]

Answer 2

What will s be when the ball touches the ground?

While you don't need to use this info to solve this problem, the acceleration due to gravity is -9.8 (meters) per (second squared)/