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Basketball Jumper Trajectory & Hoop Entry Simulator

Drag ball or vector handle directly on canvas
Scale: 1m = ~40px
Entry Angle
43.8°
Optimal (43-47°)
Flight Time
0.98 s
Airtime duration
Rim Clearance
2.85 in
SWISH VALID
Peak Height
13.4 ft
Apex above court
Simulation State Proof: Ready - Initialized default preset (20ft, 48°, 24.5fps)
Presets
Launch Parameters
Distance to Hoop 20.0 ft
Launch Angle 48.0°
Launch Velocity 24.5 ft/s
Release Height 8.2 ft
Shooter Height 6.0 ft
Backspin (RPM) 180 RPM
Physics Insights
An entry angle close to 45 degrees optimizes the target area of the 18-inch hoop for a standard 9.43-inch basketball. Backspin creates lift (Magnus effect) and softens rim bounces.

Trace the saved trajectory model step by step

Read the explanation

The saved jumper simulator computes horizontal speed as launch speed times cosine of angle. At an illustrative twenty feet per second and sixty degrees, horizontal speed is ten feet per second. A twenty-foot hoop distance therefore gives two seconds of flight time. Vertical position is release height plus vertical speed times time minus half effective gravity times time squared. This source approximation is not a calibrated shooting model. The bars compare launch and horizontal speed in the same units, using twenty pixels per foot per second. Their final two-to-one ratio depicts the cosine of sixty degrees. The written Magnus approximation subtracts backspin divided by two hundred times point eight from gravity thirty-two point one seven four feet per second squared. At zero spin effective gravity is thirty-two point one seven four. At two hundred revolutions per minute it is thirty-one point three seven four. Over two seconds this increases calculated height by one point six feet with all other inputs fixed. The coefficients are source assumptions, not measured ball aerodynamics. Both acceleration bars use fifteen pixels per foot per second squared. The export includes all fifty-one trajectory samples, each with horizontal position, height, and time, as well as input parameters and outcomes. For a two-second flight its sample spacing is point zero four seconds. Hoop clearance is the absolute height difference times twelve inches per foot; half a foot gives six inches. The swish flag additionally requires downward velocity and the written hoop-minus-ball radius margin. Preserve all exported values rather than treating a flag as experimental proof. Fifty intervals include both endpoints, giving fifty-one exported points. Both count bars use ten pixels per count; this count diagram does not represent physical height or shooting probability.

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