phyics

a physical quantity that has magnitude but no direction includes time, distance, speed, work , mass, Energy,Power

A quantity that has magnitude and direction Includes postion, displacmeny, velocoty and accelaration, force,

location of object respect to the orgin & Start to finish vector

P vs t= veloccity, read the x axsis for d v vs t =accelaration, area under graph

motion= constant velocity and a is zero can use v=d/t on d vs t graph it looks like a diagonal line (+ means its moving positive dir and - means its moving negative dir and horizontal line means no movement) on d to t graphonly negative if distance is negative ON v vs t graph constant velocity looks like a straight horizontal line)

constant acceleration (use kinematic equations) on d vs t graphitis seen as a curve down if - accelaration and curve up if positive accelaration on d vs t it is upwards diagonal slope for + a and downwards slope for - a.

velocoty is the motion and direction the object is currently moving and a is the way it is trying to be forced to go when a and v in diff dir then object slowing down

0 v= no change in postion over time 0a= no change in v over time avg v= total displacment over/ total time avg speed= total distance/ total time, max = when vf=0

RCS uses degresscounter clock wise when+ and - when going clockwise and NEWS is less than 90 degress and states degress and says ex20 s of w meaning starts at west and going 20 degress south

Vactual= vno + vc motion of actual object plus motion of prespective object, waves, waves =the actual velocity of object can find using tail to tip and components if in two d or use equation if its on one plane

if cross winds it means you are going direction as vno but brcause of Vc your vac is at the angle if heading then you must go one direction so its your vac so you angle your vno and use vc to get to your direction if heading then you must go one direction so its your vac so you angle your vno and use vc to get to your direction

in projectiles a=-9.81 always(unless not on earth) at same height it will be same speed and same time if something lands at same height you can determine time till max displacment by dividing total time by 2

in the x dir the velocity is constant so you only can use v=d/t in the y dir the accelaration is constant your displacment will either be 0(same height) or - ( landing at ground from surface). the velocity will be vi for y dir is 0 TIME IS the CONSTANT BETWEEN THE 2

x dir v= calculate using speed and angle use v=d/t to solve ydir vi= calculate using speed and angle vf=0 at max displacment y dir vf= always - in y dir reminder that when it lands that vf is NOT 0 AND NEED COMPONENTS TO FIND IT AND ANGLE UNDER HORIZONTAL v= calculate using speed and angle use v=d/t to solve

should only include external forces and one object

Newtons 1st law- law of interia and resisted accelaration(object in motion wants to stay in motion and same with res how it resists is through interia which increaces as mass increaces). This is used when we have balanced forces/ equilibriam a=0 Newtons 2ndlaw- unbalanced forces means accelaration.Use ma=fnet. which same dir as acelaration. newton 3rd law- equal and oppisite forces between two objects. Reaction forces always act on DIFFRENT object. When you swim you push backwards and the water pushes you forward

is reactionary and occurs when two objects press together and goes perpendicular to object and measured by weight scale. constant v does not affect fn but when ac goes downwards fn decreaces when ac accelarate upward fn increaces Ff is along the surface and opposes motion of object. Two ways to increace is to have ruffer surface( bigger u) or increace push downwards ( increace fn). Friction u stationary is stronger that friction u in motion. when objects connected togeter you can use fnet=ma and combine mass as a is the same///

force of tension is pull force and when connecterd the force of tension is same on both sides. When mass is suspended the object expiriences force of gravity. friction force goes against motion when force diagonal and a is on one plane the fnet y= -fg+fn+Fy so fn is not equal fg

When a force causes an object to move in the direction of the force. + work means that thework is helping the motion. -W means the work is hindering or resisting the motion. No woek means force is perpendicular to distance. Work is f.d.cos0=wnet or Wnet= W1+w2...

Ek- if the object is moving, Eps- if connected to spring streached or compressed, Epg- away from refrence height

Conservative systemm has no mechanical energy lost and has no extra push or pull force a non conservative systemdoes for coservative can use ETi=ETf for non conservative ETi + or -W= ETF (+ adds energy to system - decreaces enegy from system) in conservative if one component of energy increacesthe other has to decreace

the rate at which work is done (J/s) also in watts. p=fv or p=f d/t so the more force you need per sec the more power you need

output over input forif you make p*t= will be joules and can use with work and energy. area under f vs d graph is work

energy being transfered from source to reciver. mechanical-wave transfered through a medium longitutude- wave particles paralel to wave motion transverse- wave particles perpendicular to wave motion circular wave- water waves electromagnetic-wave thransfered through a vacume electromagnetic-wave thransfered through a vacume

only EK and speed , no Es, no FNET, no displacment, no spring force or a

only Es, displacment, Fs, a, Fnet, no speed or EK

equilibriam to crest is amplitude, bump is crest and valley is trough, crest to crest is wave length. in longitudial waves compresed parts are compressions(crests) and troughs are rarefractor and wavelength is from compression to compression and the more dense the compression the more energy, the shorter the wavelength the higher the frequency.

fixed end creates a reflected wave that is upside down, and wave goes other way. with a free end it stays upright and goes the other way fast to slow(acts as fixed end)- refected wave is upside down, less amplitude, same speed, same wave length and same frequency. The transmitted wave has less amplitude, is slower v, smaller wavelenth and same frequency. slow to fast(acts as free end)- reflected has less amplitude, same wave length speed and frequency and is upright transmitted wave- has larger wavelength, faster speed, frequency is the same and amplitude increaces (sometimes)

c- when resultant wave increces ( wave + wave or Trough + trough) d- when resultant wave decreaces (wave + trough) applied force in phase with natural frequency and can create higher amplitude and cause material to deteriate.

f- pitch amp- loudness and s- quality

o.5 wavelength. fundemantal frequency is lowest frequency of string and creates simplest wave f=f0

at mach 1 waves bunch at the front, beyond it creates wings . greatest is created whe small opening and big wavelengths

speed not change, velocity change and tangent to circle motion, ac towards the middle and constant.

Ff, Ft, Fg

min tension at top of circle and max at bottom min speed is when object goes at a speed where at the top the only thing bringing it down is fg, this is measured at top of loop, if travels faster than min speed then fc= fn + fg. Min FN is at top of hill and max FN is at bottom of hill

the refrence is same fn is split into components and fcx=fnx fcy= -fg+ Fny

Ptolemy- earth center and stars and planets go in epicycles. Coprenicus- Geocentric and galileo defended him Keppler- figured out we moved in eliptical orders Newton- explained why we move in orbit (Fg)

when we are closer to a planet (stronger g force) we move faster. when we are farther we take more time

verified that all masses are attracted to each other (not just planets) . The Fg equation where fg was responding varriable

the stronger the g the more weight you will have and the faster something will free fall

ac=g (sattilites are bassically in free fall so the bigger the g the bigger the ac) and there is no Fn on astronauts but there is Fg and geo sychronus is a sattelite with T= 24 hours law of gravity is all masses are attracted to each other. when you have fg on mass on two planes do tail to tip method