# Projection (angle, height and distance) Calculator

## Calculates the initial angle, maximum height and travel distance of the projection from the initial velocity and flight duration. | ||

Projection (angle, height and distance)

[1-2] /2 | Disp-Num |

- Purpose of use
- exploring
- Comment/Request
- hi, not sure if its a bug but for "Projection (angle, height and distance) Calculator"

"l"formula no matter how i actually put in those number by hand or transpose onto a computer do not line up. the distance is indeed correct but not too sure about the formula. if the formula is correct was wondering if you could think of any reason why my computer and hand may not be interpriting it correctly? - from Keisan
- The "l" formula can be obtained as below.

i) l = v*cosθ*t

l^{2}= v^{2}*cos^{2}θ*t^{2}

ii)

0 = v*sinθ - (g*t/2)

v^{2}*sin^{2}θ = (g*t/2)^{2}

From i) and ii),

l = sqrt(v^{2}- (g*t/2)^{2}) * t

[1] 2017/12/16 05:18 Male / 20 years old level / An engineer / Useful /

- Purpose of use
- space station position when visible

[2] 2016/08/05 01:02 - / 60 years old level or over / A retired people / Useful /

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