Frequently Asked Questions
What is horizontal projectile motion?
An object launched with horizontal velocity, falling freely under gravity. Horizontal velocity stays constant; vertical velocity grows linearly with time.
Does this account for air resistance?
No. It assumes a vacuum. Real projectiles experience drag that reduces range and impact speed.
How is the range calculated?
Range = v₀ × t, where t is the time to fall the launch height: t = √(2h/g).
Does a faster launch make the object stay in the air longer?
No. The horizontal and vertical motions are independent. Flight time depends only on the launch height, t = √(2h/g), because a horizontal launch starts with zero vertical velocity. Launch speed sets only the range, R = v₀ × t. Two balls rolled off the same table, one fast and one slow, hit the floor at the exact same instant; the faster one just lands farther out. Raising the height is the only way to lengthen the flight time.
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