A stone is thrown up from the top of a platform with an initial velocity of 19.8m/s. If the top of the platform is taken to be the ground level, calculate The Velocity just before reaching the ground

Answer 1

it will be the same as when it went up.

Answer 2

Since the platforms are both of the same height, the velocities will be exactly the same, albeit in a negative direction.

Therefore, your answer is -19.8mls.