Elastic collisions are collisions between objects where both momentum and kinetic energy are conserved. This elastic collision example problem will show how to find the final velocities of two bodies after an elastic collision. This illustration shows a generic elastic collision between two masses A and B. The variables involved […]

# Physics

An elastic collision is a collision where total momentum and total kinetic energy is conserved. This illustration shows two objects A and B traveling towards each other. The mass of A is mA and the moving with velocity VAi. The second object has a mass of mB and velocity VBi. […]

## Elastic Collision of Two Masses – It Can Be Shown ...

Impulse and momentum are physical concepts that are easily seen from Newton’s Laws of Motion. Start with this equation of motion for constant acceleration. v = v0 + at where v = velocity v0 = initial velocity a = acceleration t = time If you rearrange the equation, you get […]

## Impulse and Momentum – Physics Example Problem

Lichtenberg figures are fern-like branching structures formed from an electrical discharge on or inside of an insulator. Like snowflakes, every Lichtenberg figure is unique – an intricate and beautiful natural work of art. Lichtenberg figures form naturally, sometimes in the skin of lightning strike victims, in lightning strikes into sand […]

## Make a Lichtenberg Figure the Easy Way

Special relativity theory introduced an interesting notion about time. Time does not pass at the same rate for moving frames of reference. Moving clocks run slower than clocks in a stationary frame of reference. This effect is known as time dilation. To calculate this time difference, a Lorentz transformation is […]

## Moving Clocks Run Slower – Time Dilation

Relativity tells us moving objects will have different lengths in the direction of motion, depending on the frame of reference of the observer. This is known as length contraction. This type of problem can be reduced to two different frames of reference. One is the frame of reference where a […]