A stone is dropped from a height of 50 m above the ground will it has a uniform or a non-uniform speed as it moves towards the ground.

Answer 1

It will gather speed because of acceleration due to gravity.
The acceleration is g=9.8 m/s²

Answer 2

A stone is dropped from a cliff 50m high. Disregarding air resistance (a) how long does it take stone to reach the ground (b) what is its speed when it strikes the ground?