Projectile Motion - The Initial Velocity

The Initial Velocity

If the projectile is launched with an initial velocity v0, then it can be written as

.

The components v0x and v0y can be found if the angle, ϴ is known:

,
.

If the projectile's range, launch angle, and drop height are known, launch velocity can be found by

.

The launch angle is usually expressed by the symbol theta, but often the symbol alpha is used.

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