Horizontal motion
The horizontal velocity vx stays constant when air resistance is ignored.
Physics Learning Tool
Change the launch speed, angle, height, and gravity to see how projectile motion creates a curved path through the air.
How fast the projectile leaves the launcher.
Measured upward from the horizontal ground line.
Set this above zero for a cliff, table, or platform launch.
Earth is about 9.81 m/s^2.
The horizontal velocity vx stays constant when air resistance is ignored.
The vertical velocity vy changes because gravity accelerates the projectile downward.
A higher angle gives more height, while a lower angle gives more forward motion.
Try changing one value at a time and watch the labeled diagram. This makes it easier to connect formulas with the path you see.