Question

if a stone with an original veloscity of 0 is falling from a ledge and takes 8 seconds to hit the ground, what is the final velocity of the stone

Answer 1

Initial velocity -u = 0 m/s
Final velocity -v = ?
Time taken = 8 s
Acceleration due to gravity = 10 m /s²

Using Eq.1 of motion,
v = u + at
v = 0 + (10)(8)
Therefore, v = 80 m/s