How can you describe motion?
It is all around you. It is how objects move at different rates in different ways.
Motion
A force
Equilibrium
It is a device that changes the direction or the amount of force needed to do work.
Machine
In Science it is the ability to do work or cause a change. It can change an object's shape, color, temperature and other qualities.
Energy
Describes the speed and the direction of an object's motion.
Velocity
It is a force that pulls other objects towards another object. For example, The Earth pulls objects towards its center.
GRAVITY
The tendency of an object to resist any change in motion.
Inertia
They make work easier, examples of these are: a hummer, a screw driver, a doorknobe and a ramp.
Simple machines.
It is energy due to motion, the amount of this energy depends on its speed and mass.
Kinetic energy
It is how far an object moves during a certain amount of time.
To calculate it we use the formula:
distance/time
Average speed
Friction
This law says that unless a force acts on an object the object will remain in constant motion.
First Law of Motion
It is one type of simple machine, it consists of a rope or cable that runs through a grooved wheel.
A pulley
It is energy that is not causing any change now but could cause change in the future. It is sometimes called stored energy.
Potential energy
BONUS
BONUS
It is done when a force moves an object.
We can calculate it using this formula: force x distance
Work
It is the rate at which the velocity of an object changes over time.
It is made of a circular object, such as doorknob and a shaft, it makes work easier by reducing the amount of work needed. To pull an bucket out of a well, we can use this simple machine.
Wheel and Axle
It is the energy from the electrons that forms molecules. The more electrons are involved in a bond the more of this kind of energy there is in the bond.
Chemical energy.
It is the rate at which work is done.
We can calculate it using: work/time
Power
It describes how acceleration, mass and net force are related.
Second Law of Motion.
It is another type of simple machine. It consists of a flat surface with one end higher than the other.
Inclined plane.
True or false?
Energy can not be created or destroyed.
True