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1st law and motion

TermDefinition
Distance how far you have traveled between two positions. It is always positive. It is a scalar quantity
Displacement change in position. It is a straight line distance between your starting position and ending position. It is equal to Final position minus initial position. It can be positive or negative. It is a vector quantity
Scalar quantity that only requires magnitude (how big)
Vector quantity that requires both magnitude (how big) and directions
Speed how fast something is moving. It is equal to distance divided by time. It is a scalar quantity
Velocity rate at which position changes. It is equal to displacement divided by time. It is a vector quantity
Inertia the resistance an object has to changes in its motion.
Force any push or pull (interaction) that can cause a change in motion. An interaction between two objects.
Net Force the combination of all the forces on an object
Balanced Force when the net force in both the horizontal and vertical direction is 0N. These can cause motion to remain unchanged.
Unbalanced Force When the net force in both the horizontal and vertical is not 0 N. These can cause motion to change.
Gravitational Force/Weight (FG) a non-contact force between two objects that is most apparent close to a large object, such as a planet, the direction of the force is general towards the center of the other object. Eq. towards the center of the earth.
Applied Force (Fa) the support force exerted upon an object that is in contact with another stable object. It is in the direction of the push or pull.
Normal Force (Fn) a contact force that is exerted by a surface against an object that is pressing against the surface. It is perpendicular to the surface and present whenever atoms are being "crunched". AKA "crunchy force"
Tension Force (Ft) Contact force exerted by a taut spring,rope,or wire on an object. It is along the rope and present whenever the rope is taut.
Friction Force (Ff) the force exerted by a surface as an object moves across it or mkaes an effort to move across it. It is parrallel to the surface in the direction opposite of the motion or attempted motion.
Air resistance/ drag (Fd or fair) a special type of frictional force that acts upon objects as they travel through the air/fluid. It is in the opposite direction of the motion of the object.
Spring (elastic) force (Fs) A contact force exerted on an object by a spring or elastic object when it is stretched or compressed. It is along the spring in a direction that would restore the spring/elastic material to its relaxed position.
Thrust (Fthrust) a contact force that is exerted in the opposite direction of an exhaust gas being expelled
Created by: GPage