01
Theory and background
What is free fall?
Free fall is motion under the influence of gravity alone. In the ideal model, all objects near Earth's surface accelerate downward at the same rate when air resistance is ignored.
PhysicsInteractive simulatorNo install
FreeFall
Explore vertical motion under gravity. Drop an object, measure how velocity changes with time, and connect the motion with constant acceleration.
Gravity modelHeight, time, velocity, acceleration
Experiment guide
Use this simulator like a compact physics lab
Start with the concept, open the lab, then compare the observed motion with the key relationship. The sections below keep the theory, workflow, and common questions easy to scan.
SubjectPhysics
ModeInteractive
ModelGravity model
AccessBrowser
02
How the simulation works
Interactive experiment flow
Launch the lab, adjust the available controls, and observe the result immediately. Use the simulation to connect the equation with what changes on screen.
Vertical positiony = y0 + v0 t - 1/2 g t^2
Frequently asked questions
Free Fall FAQ
01
What is free fall?
Free fall is motion where gravity is the only significant force acting on an object.
02
Do heavier objects fall faster?
Ignoring air resistance, all objects fall with the same acceleration regardless of mass.
03
What is g near Earth?
Near Earth's surface, gravitational acceleration is about 9.81 m/s^2 downward.
04
Why does air resistance matter?
Air resistance opposes motion and can reduce acceleration, especially for light or broad objects.