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physical science 0.1

Motion in Newtons first law, intertia, and motion

Distance How far you have traveled between two positions, It is always positive. It has a scalar quantity.
Displacement Change in position. It is the straight line distance between your strating position and ending position. It is equal to Final position minus inital position. It can be postive or negative. it is a vector quanitity.
Scalar Quanitity that only requires magnitude (how big)
Vector Quanitity that requires both magnitude (how big)
Speed How fast something is moving . It is equal to the distance divided by time. It is a scalar quanitity.
Velocity Rate at which position changes. It is equal to the displacemnt divided by time. It is a vector quanitity.
Newtons first law Aka the law of inerti, an object at rest stays at rest. and an object in motion will stay at rest, and an object in motion with the same speed and in the same direction unlessed acted on an unblanced force
Mass A measure of the amount of an object contains also the amount of inertia an object has
Force Any push or pull (ineraction)that can cause a change in motion
Net force the combination of all of the 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
Gravatational force 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 (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 fence (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 string, rope, or wire on an object . It is along the rope and present whenever a rope is taut.
Friction force (ff) 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 (Fthrust) A contact force that is exerted in the opposite direction of an exhaust gas being expelled.
Created by: 20220