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30 Cards in this Set
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force

push or pull


vector

mathematical equation of anything defined by its size or magnitude and its direction


weight

w=mg
ex. 59kg X 9.8 if wt lbs change to kg. weight divided by 2.2 

static vs dynamic friction

static dry friction between surfaces not moving
dynamic dry friction between surfaces movong relative to each other 

weight vs mass

mass meas of linear inertia. scalar. kg
wt meas of force of gravity. vector. N 

linear motion

or translation
occurs when all pts of body or object move the same distance in same direction at same time rectilinear and curvilinear translation 

rectilinear translation

all pts on body or obj move in a straight line so the direction of motion does not change. all pts move same distance


curvilinear translation

all pts move so orientation of obj doesn't change and all pts move same distance. direction of motion canstantly changing


angular motion

or rotary motion/rotation occurs when all pts on a body or object move in circles about same fixed central line or axis


general motion

combination of angular and linear motions. ex running walking because trunkbis linear limbs angular


linear kinematics

angle or line of motion object moves. descrip of motion. speed velocity ex curvilinear angular


distance vs displacement

dis traveled length of path from st to end. displace. meas straight line initial pt to end pt. vector


speed vs velocity

speed rate of motion.. rate of distance traveled
velocity rate of motion in specific direction rate of displacement vector 

instantaneous velocity

velocity of object at an instant in time


uniform acceleration

acc is constant doesnt change. occurs when net force is constant not changing


vector quantities

size and direction
acceleration velocity displacement 

horizontal projectile

constant. vertical velocity constantly chg at rate of 9.81.. any object flying through air has both


linear kinetics

forces acting on an object. ex push or pull


newtons first law

every body continues at state of rest or uniform motion in straight line unless compelled to chg by forces


linear momentum

product of objs mass and linear velocity.. faster obj moves more momentum


coefficient of restitution

absolute value of the ratio of the velocity of separation to the vel of approach. vel of separ is diff between vel of two colliding obj after collision (how fast moving away from each other.) vel of approach is diff between vel of two obj before collision


newtons second law

chg of motion of an obj is proportional to force impressed and is made in direction of straight line in which force is impressed


impulse

product of force and time during which the force acts


newtons third law

every action has an equal and opposite reaction


impulse momentum relation

increase duration forced applied increases ch in momentum


work

product of force and amount of displacement in direct of that force. unit joule or Nm


energy

capacity to do work


kinetic energy vs potential energy

energy due to motion vs energy due to position


strain energy

energy due to deformation of an object


power

how quickly or slowly work is done
