How to Calculate Downrange Velocity of an Arrow?

[Harley6]

Homework Statement

Given an arrow weight of x grains and a muzzle velocity of y fps, is there a formula to compute approximate downrange velocity at, say, 20-80 yards?

Homework Equations

The Attempt at a Solution

Other than attempting to shoot through a chrony at those distances, I don't have a clue to a pencil and paper solution.

 

[Coto]

Hey Harley6,

The answer you are looking for is called projectile motion (http://en.wikipedia.org/wiki/Projectile_motion).

 

[Harley6]

Thank you, Coto; now I have something to do over the summer: Relearning trigonometric functions.

Harley6