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Term | Definition |
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force | a push or pull exerted on an object in order to change the motion of the object Force has sides are in Direction |
motion | an object in position relative to a reference point |
reference point | a stationary object that is used to describe an object's motion |
speed | the distance that is traveled divided by the time interval during which the motion occurred |
velocity | the speed on an object in a pictacular direction |
acceleration | the rate at which velocity changes over time an object accelerates it its speed direction or both changes |
friction | a force that oppose motion between two surfaces that are in contact |
net force | the combination of all of the forces acting on an object |
balanced force | stated when the net force acting on an object equal zero |
unbalanced force | stated when the net force acting on an object |
inertia | The tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until and outside force acts on the object. |
gravity | a force of attraction between objects that is due to their masses |
work | activity involving mental or physical effort done in order to achieve a purpose or result. |
machine | a device that helps to work either but overcoming a force by changing the direction of the applied force |
inclined plane | a simple machine that is straight slanted surface which facilities the rising of levels of rent |
wedge | a simple machine that is made up of two inclined planes that are that moves often used for cutting |
screw | a simple machine that consists of an inclined plane wrapped around a cylinder |
lever | a simple machine that consists of a bar that pivots at a fixed Point called a fulcrum |
pulley | A simple machine that is a wheel with a grooved rim in which a rope can run to change the direction of the force that lifts a load. |
wheel of axie | a simple lifting machine consisting of a rope that unwinds from a wheel onto a cylindrical drum or shaft joined to the wheel to provide mechanical advantage. |