Mechanics · Projectiles
Chapter 1 · 3
The idea
Horizontal projection
A body projected horizontally moves under gravity: horizontal velocity stays constant while the vertical motion is free fall — treat the two directions independently with suvat.
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Mechanics · Projectiles
Horizontal projection
A body projected horizontally moves under gravity: horizontal velocity stays constant while the vertical motion is free fall — treat the two directions independently with suvat.
Why it works
Two independent motions, one shared clock
Here is a fact that surprises almost everyone the first time: drop one ball off a table, and at the same instant fire an identical ball horizontally off the same table at any speed you like — they hit the floor together. Once a body is in the air with only gravity acting, its horizontal and vertical motions are completely independent. Gravity acts only downwards, so it changes the vertical velocity but never the horizontal one. This is the key that unlocks every projectile problem: solve the two directions separately, linked only by the shared time .Keep reading — free
The rest of the explanation, plus 2 worked examples you step through move by move.
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