Physics, 06.11.2020 23:20, lilpeepxliltracy

A ball at rest falls from a platform above the ground. The ball falls freely and hits the ground 3 s later. What is the height of the platform?
(use -9.8 m/s2 today for the acceleration due to gravity)

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A ball at rest falls from a platform above the ground. The ball falls freely and hits the ground 3...