A stone is thrown vertically upwards with an initial velocity of 5 m/s. What will be the time taken for it to reach the greatest height? A stone falls off the edge of a cliff. With what velocity will...

A stone is thrown vertically upwards with an initial velocity of 5 m/s. What will be the time taken for it to reach the greatest height?

A stone falls off the edge of a cliff. With what velocity will it hit the beach below if the height of the cliff above the beach is 50 m?