Question

A stone is thrown vertically upwards from a building of 96 ft height with a intial velocity of 116ft / sec if the acceleration due to gravity is 32 ft / sec2 then after
how many seconds stone will reach the ground

Answer 1

first use the formula v^2-u^2 =2as and then find v
then use the formula v-u upon t and then find  t.
thats the answer.