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## Homework Statement

A projectile is fired with an initial speed of 100 ft/s and angle of elevation Pi/6 (30 degrees).

Find:

A) the range of the projectile (along the x-axis)

B) the maximum height reached

C) the speed at impact

## Homework Equations

Vf^2 = Vi^2 +2a*s

Vf = Vi + a*t

Sf = Si + Vo*t + (1/2)a*t^2

(where S is any coordinate axis)

## The Attempt at a Solution

I have the answers from the answer key (this is a review), and I can't seem to get any of it right.

I found s (max height) (not S), to be 127.551 seconds.

I found t = 10.2 (from launch to landing)

I found range = 883.346.

I know this isn't a hard problem, but for some reason I cannot solve it.

The answers are:

A) 625*sqrt(3)/4 ft

B) 625/16 ft

C) 100 ft/s