Question

a penny is dropped from the top of the empire state building, a height of 381 meters. find the final velocity of the penny

Answer 1

We know the height is 381m, and that the acceleration is 9.8 m/s^2 and initial velocity (Vo) is zero, you can calculate the final velocity (Vf) using this equation: Vf^2 = Vo^2 + 2ax. The final velocity is 86.4 m/s or about 193 mph.