physics

• Friction: Static vs Kinetic Force Lab

  Pull a block and watch static friction rise to match your force until it breaks free and slides under a lower, constant kinetic friction, with a live force-vs-pull graph and coefficient sliders.

• Interactive Acceleration Due to Gravity (Free Fall)

  Drop a hammer and a feather with air resistance on or off, on Earth, the Moon, Mars or Jupiter. In a vacuum they land together, because free-fall acceleration g is the same for every mass.

• Interactive F = ma Calculator (Newton's Second Law)

  Enter any two of force, mass, and acceleration and this F = ma calculator solves the third instantly, with a free-body box that accelerates and a worked-steps line for every answer.

• Interactive Motion Graphs (Distance-Time & Velocity-Time)

  Drag points to shape a distance-time or velocity-time graph and a runner moves to match. See why slope is speed or acceleration, and the area under a velocity-time line is distance.

• Interactive Newton's Laws of Motion

  One sandbox for all three of Newton's laws: glide with no net force, accelerate at a = F/m on a live velocity-time graph, and push off to see equal and opposite forces.

• Interactive Ohm's Law Calculator

  Set any two of voltage, current, and resistance and watch the third solve itself with V = I × R. A live circuit lights a bulb whose brightness tracks the power.

• Interactive Wave Explorer

  Animate a travelling wave, adjust its amplitude, wavelength, and frequency, switch between transverse and longitudinal motion, and watch wave speed (v = f × λ) and period (T = 1/f) update live.

• Net Force & Free-Body Diagram Builder

  Drag the force arrows on an object and the net force updates live, with a balanced-or-unbalanced verdict. Build free-body diagrams and find when an object accelerates.

• The Electromagnetic Spectrum

  Slide along the electromagnetic spectrum from radio waves to gamma rays and watch wavelength, frequency, and photon energy update together, with a rainbow swatch in the visible band.