Question

An object is dropped from a height of 25 meters. At what velocity will it hit the ground
A. 7.0 meters/second
B. 11 meters/second
C. 22 meters/second
D. 49 meters/second
E. 70 meters/second

Answer 1

final velocity square minus the initial velocity squared = 2(gravity)(height)

if you were throwingit down you would need the add the initial velocity to the other side. You dont have to here because its just 0 (it doesnt have an initial velocity)