### Acceleration & Kinetic Friction in Physics for the TI-89: Video Transcript

Ok this is a video on acceleration with regards to physics

and how my programs work on the ti-89 titanium calculator

let’s get started here you have to press second alplha in my programs

after you buy my programs to put in the **p h y s i c s** letters

and then you have to press alpha again to put in the open and closed parenthesis

in here press enter and you’re into my menu

you have many choices of course everythings always menu driven

atwood machine baseball hits

and all kinds of things but right now we’re interested in acceleration

so, that’s what were going to choose here and notice we have angular

centripetal and tangential acceleration if you want to go right to them

otherwise we’re going to go to acceleration whereby you know you need to find acceleration

because of what the test question was and so here’s, and of course they give you

the variables, and there is a million of them so I put them all here in alphebetical order

and uhm, you can scroll down to what they give you

right now let’s just do mass, coefficient of kinetic friction and

the angle Probably of a ramp

mass sliding down a ramp or something and of course you have to press alplha before

we enter anything into the entry lines I’m going to press alpha and put in eight

they give you the choice of grams or kilograms and I choose the number before it for kilograms

or I can scroll to it coefficient of kinetic friction i’m going

to push alpha, point six maybe

and then the angle, alplha twenty four degrees and I show you what you’ve entered

you can change it if you want I say it’s ok

here’s the equation, the original equation You always want to throw this down

and because the mass cancels a big deal in physics

the masses on both sides of the equation algebracially you can cancel it

and here’s the real equation for acceleration you mark this on your paper

that’s the first thing you mark down of course and you got three points credit right then

and here’s the actual formula and then you enter the variables that you

put in here and here’s the answer

a minus one point three eight seven meters per second squared

pretty neat huh every step physics dot com

go to my site buy my programs and pass your physics tests and class