(adsbygoogle = window.adsbygoogle || []).push({}); Instantaneous Acceleration Help PLEASE!!!~~~

I have a hw problem on Instantaneous acceleration:

The engine of a model rocket accelerates the rocket vertically upward for 2seconds as follows:Att=0, speed=0; Att=1s, s=5m/s; Att=2s, s=16m/s.

a) find the average acceleration during the 2s interval and

b) find the instantaneous acceleration at t=1.5s

My work so far:

a) avg acceleration:

a=v/t , (16m/s -0m/s)/(2s-0s)

= (16m/s)/2s

a=8m/s^2 Is that right??

b) I need help on this one:

What is the easiest and simplest way to find the instantaneous accerlation? What is the simplest equation?

I found an equation on a site but I don't understand what the variables mean and what numbers I have to put in.

Equation?: a= lim t->0 (delta)v/(delta)t

On site: http://rockpile.phys.virginia.edu/arch2.pdf#search="instantaneous acceleration"

Don't understand what it means and what numbers I have to subsitute!!

BTW THANKS A LOT!!! =D

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# Homework Help: Instantaneous Acceleration Help PLEASE ~

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