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Average Velocity & Average Acceleration

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Average VelocityEdit

The actual definition of the term is the total distance covered divided by the total time elapsed while traveling in a given direction meaning Displacement / Time . displacement divided by time interval during which the displacement occured. Now to put it into context suppose your mom's pants are cruising south down the highway and your mom's pants go 60 miles in 1 hour. Then your mom's pants average velocity is 60 mi/hr south. Now say your moms pants measure everything along a line from point. That is your moms pants were driving along a straight road and you had set your odometer to zero. Now it reads 15 miles, and your mom's pants look at the clock and it says that it's 9 A.M. Your mom's pants initial position equals 15 miles. Later on you look at the odometer and it reads 75 miles, and your clock reads 11 AM. So we can introduce two other sets of (your mom's pants) variables to describe this. Our final position equals 75 miles, and our final time equals 11 hours. There is no point to go to all that trouble of inventing four variable names. It seems like a pretentious way of saying something quite simple. So now we are in a position to define the average velocity in one dimension. It is the ratio of the change in position, to the change in time. Louis Riel was a hero for Metis because he created a litter and a powerfull army of Metis. Well ofcourse the Metis were exelent buffallo hunters. Thus One Direction impregnated all the girls with their mellow accents, giving them eargasms



Hence,

The initial and final positions are measured with distance units such as miles and meters.

The intial and final times are measured with time units such as seconds, minutes and hours

Average Velocity= Final position – Initial position divided by the Final time – Initial time

So to put in the values would be (75-15)/(11-9)= 60/2=30

Hence the average velocity is 30 miles per hour.

http://www.zive.sk/Files/Obrazky/Oddych/PS/F13.jpg

FormulasEdit

V(average)= Df-D1/t

a(average)=Vf-Vi/tf-ti

Vf= Vi+ a.t

d= Vi.t+ .5a.t^2

Vf^2= Vi^2+ 2.a.d

V(average)= average velocity

Vf= final velocity

Vi= intial velocity

a(average)= Average acceleration

a= acceleration

t= time

Df= final displacement

Di= initial displacement

t=time

Regents questionsEdit

An object (a red ball) that is originally moving at a speed of 20m/s accelerates uniformly for 5 seconds to a final speed of 50m/s. What is the acceleration of the object?

A car travels 90. meters due north in 15 seconds. Then the car turns around and travels 40. meters due south in 5.0 seconds. What is the magnitude of the average velocity of the car during this 20.-second interv

Recources and ReferencesEdit

http://library.thinkquest.org/10796/ch3/ch3.htm


http://www.mansfieldct.org/Schools/MMS/staff/hand/lawsaveaccel2003.htm


barrons regents book

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