VEX Robotics Inventors Guide
Protobot Quick Start
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Physics is FUN!
||A force is any push or pull.
||Gravity is a force which draws any two objects toward one another.
||Speed is how fast an object moves and is equal to the distance that object travels divided by the time it takes.
||Velocity is a combination of speed and the direction in which an object travels.
||Critical velocity is the speed needed at the top of a loop for a car to make it through the loop without falling off the track.
||How quickly an object speeds up, slows down, or changes direction; equal to change in velocity divided by time.
||Friction is a force caused by rubbing between two objects.
||Potential energy is energy stored by an object ready to be used (in this lesson, we will use gravitational potential energy, which is directly related to the height of an object and its mass).
||Kinetic energy is the energy of an object in motion, which is directly related to its velocity and its mass.
||The gravitational constant is the acceleration caused by Earth's gravity at sea level and is equal to 9.81 m/s^2 (32.2 ft/s^2).
||Also known as a gravitational force, a g-force is equal to the force exerted on an object by Earth's gravity at sea level.