A stone is thrown vertically up at 20 m/s from a tower 80 m height. The speed with which it hits the ground is [g=10m//s^(2)].

A stone is thrown vertically up at 20 m/s from a tower 80 m height. Th

1.	A stone is thrown vertically up at 20 m/s from a tower 80 m height. The speed with which it hits the ground is [g=10m//s^(2)].
Answer» `14.4m//s` `28.14m//s` `80m//s` `SQRT(5)20m//s` ANSWER :D