what is the math formula used to determine the speed (or time?) of somethings fall based upont he height?

Question

it uses the coefficents d for distance, t for time, and yes.. plz help!

Answer 1

d = (1/2) g t^2

g is acceleration do to gravity.

Speed = g x t

let Height = d

Solve for t t = sqrt ( 2 x d / g)

use t ot calculate Speed.

Answer 2

oops my bad, i saw the first quesiton mark and thought you were asking for the velocity.

when an object is at a certain height it is said to have potential energy. When it falls all of that potential becomes kinetic (motion) energy.

the formula you are looking for is

mass*acceleration due to gravity*height = 1/2*mass*velocity^2

so

veloctiy = sqrt(2*(acceleration*height))

in metric the acceleration due to gravity is 9.8 meters/second. The height then is in meters. You can use google to convert... just type in "ft to meters."

Answer 3

d = 1/2 a * t^2

where a = gravioty xcoeeff
9.8 m/sec^2 or 32 ft/sec^2