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Yr 10 Forces

Definitions for Forces

Distance Refers to "how much ground an object has covered" during its motion. Units include centimeters, meters, kilometers
Time The quantity measured using a stopwatch or clock. Units seconds/minutes/hours
Speed The distance travelled in a specific amount of time. Describes how fast an object moves. Units are km/hr or m/s.
Force A push or a pull. Something that pushes or pulls on an object in a certain direction, measured in Newtons.
Kinetic energy The energy possessed by a moving object
Balanced force The forces that act on an object and combine to produce a net force of zero. In other words, all of the forces on the object are equal.
Unbalanced force Those forces acting on an object that combine to produce a net non-zero force. This means that some forces are greater than others acting on an object, so the object will be in motion.
Friction A resistance force opposing motion. A force that resists motion whenever the surfaces of two objects rub against each other. Slows objects down.
Gravitational energy The energy found between two masses that pulls objects towards each other. The bigger the mass the greater the gravitational pull and the faster an object travels towards its centre.
Magnetic energy The energy required to set up a magnetic field
Electrostatic Stationary electrical charges in which no current flows; a build up a electrical charge due to friction. It discharges once to cause a shock.
Support force The force that opposes gravitational force. It holds objects up eg table supports the book.
Tension The state or condition of being pulled or stretched. The type of force found in stretched ropes etc.
Resultant force The overall force that results from two or more forces acting together on an object.
Newton The international unit of force . Its symbol is N.
Weight A measure of the force of gravity on the mass of an object. (The strength of the gravitational force pulling down on an object.)
Mass The amount of matter an object contains. Measured in Kg or g.
Gravity The attractive force that objects exert on each other because of their mass. The bigger the mass of an object the greater the gravitational pull of smaller masses.
Motion A change in position over time
Net Forces A combination of all of the forces acting on an object. These determine whether an object will move or not move. (Also means resultant; overall).
Joule Unit for energy
Created by: kjsime