Physics Genuises

Pre-College Issues High School Life
1

<p>Hi,
I have a Calculus group presentation tomorrow and I've solved the problem and done the entire write-up but I'm not sure if my answer makes sense. My group is pretty confused so they left it all up to me :( I solved the problem as best as I could but I ended up with a negative acceleration and am not sure if that's possible. The problem involved analyzing velocity data from the 1992 Endeavour Space Shuttle mission to find the maximum and minimum acceleration. </p>

<p>If I could email my work to somebody to read over, that would be really nice. I want to make sure I get the right answer because I don't want to disappoint my group.</p>

<p>I could also post it here, but it's in a word document with tables and graphs, so might be hard to follow.</p>

<p>Thanks in advance :)</p>

2

<p>a negative acceleration? of course you can g=-9.81 m/s^2</p>

3

<p>It doesn't really make sense to me though. The acceleration at 0 seconds after lift-of (velocity was 0) was -22 ft/sec^2. But as time increases the acceleration becomes positive. I guess it makes a little sense. If acceleration in change in velocity with respect to time, than the velocity was 0- a positive velocity, which would equal a negative velocity? I'm still a little confused (haven't taken physics yet) but thanks for the help :)</p>