# Homework Help: Average Acceleration

1. Oct 22, 2006

### rachelle

Hi, this may seem like a silly question, but I'm gunna ask it anyway...

I have the ff. data for acceleration:

0
9.152
8.43
9.07
7.731
10.423

When I calculate the average acceleration, would it be the sum divided by 6 or would it be the sum divided by 5? That is, should I include the "0" in calculating my average?

2. Oct 22, 2006

Since 0 is a value as any other one, you must include it.

3. Oct 22, 2006

### rachelle

Thanks!

~rachelle

4. Oct 22, 2006

### rachelle

Hmm.. sorry, follow-up question...

What if I'm calculating my average acceleration for gravity, do I need to include the "0" then?

It's just that when I didn't include the "0" on my calculations, it was nearer the true value of "g" (9.81)
But when I included zero in calculating my average, it was a little far off....

ps: i'm doing my lab on calculating "g" free-falling object

5. Oct 22, 2006