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newtons first law

TermDefinition
distance how far you have traveled between two position it is always positive it is a scalar quanity
displacement change in position it it a straight line distance between your starting position and ending position . is it equal to final position minus in position it can be initial positive it can be positive or negative it is vector quanity
scalar quantity that only requires magnitude how big
vector quanitity that requires both magnitude how big and directions
speed how fast something is moving it is equal to distance divided by time is is scalar quanity
velocity rate at which position changes it is equal to displacement divided by time it is vector quanity
newtons first law law of inertia an object at rest will stay at rest and an object in motion will stay in motion in the same speed and same direction unless its acted upon an unbalanced force.
mass a measure of amount of matter an object has. also the amount of inertia an object has
inertia the resistance an object has to change in its motion.
force any push or pull (interaction) that can cause a change in motion.
net force the combination of all forces on an object
balanced force When the net force in both the horizontal and vertical directions is 0 N. These cause motion to remain unchanged.
unbalanced force when the net force is both the horizontal and vertical directions s not 0 N. These 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. Eg. Towards the center of the earth.
applied force the force extend upon an object that is in contact with another stable object. it is a direction push or pull
normal force a contact force that is excreted 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 contact force that is exerted by a taut string rope or wire on an object it is on a rope whenever a rope is taut
friction force the force exerted by a surface as an object moves across it or makes an effort to move across it. It is parallel 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 a contact force that is exerted in the opposite direction of an exhaust gas being expelled.
Created by: 20115