Wave Speed
Wave speed is given in meters per second (the number of waves that pass per second)….
Force, Mass and Acceleration
An object of constant mass accelerates in proportion to the force applied. Demo In this tutorial you will learn…
Kinetic Energy
In physics, the kinetic energy (KE) of an object is the energy that it has due to its motion….
Half Life
The radioactivity of a sample decreases over time. Half life is a measurement of this…
Gravitational Potential Energy
Lifting an object in a gravitational field transfers energy into the objects gravitational energy store….
Efficiency
The efficiency of a device is the proportion of input energy that is converted to…
Forces and Work Done
The unit for work done is the joule (J), or Newton meter (N-m). One joule is equal…
Momentum
All moving objects have momentum. Forces can cause changes in momentum. The total momentum in…
Change in Momentum
All moving objects have momentum. Forces can cause changes in momentum. The total momentum in…
Uniform Acceleration
Uniform or constant acceleration is a type of motion in which the velocity of an object changes by…
Acceleration
Acceleration is how quickly the velocity is changing whether it be speed, direction or both….
Speed
Speed is how fast an object is moving in no given direction. Velocity is how…
Weight on the Moon
Weight is the force acting on an object due to gravity. The weight of an object is…
Weight on Earth
Weight is the force acting on an object due to gravity. The weight of an object can…