Question

particle moving. please check my work :)

Answer 1

The beginning part at b is a little different from the first picture to the second because it was done on different days lol.
Something seems wrong about the quadratic part.

Answer 2

Right now I am copying it to a new paper and organizing it all so I want to get it checked, sorry if that little piece is confusing :)

Answer 3

@zepdrix :} free?

Answer 4

I am rewriting it now because that's pretty confusing D: part c and d will be the same though. just part b is getting worked on

Answer 5

B looks good :o

Answer 6

We'll have to fix part C I think.

Answer 7

If you take the position at time t=5,
and subtract the starting position at t=0,
that tells you how far the particle has been `displaced` from its starting position.

That doesn't tell you how far (backwards and forwards) it traveled in total.

Answer 8

Err nevermind, it only went in one direction from 0 to 5 :)
haha, only decreasing.

So you're fine.

Answer 9

phew.

Answer 10

`d) When is the particle speeding up, when is it speeding up?`
I think you meant `slowing down` for that second part, ya? lol

Answer 11

I was writing a song!!

Answer 12

xP yes, I meant "when is the particle speeding up, when is it slowing down" xP

Answer 13

lol

Answer 14

For your acceleration function.
I don't understand where the t=7.772 is coming from.
That was a critical point, why is it being used as an inflection point?

Answer 15

part which?

Answer 16

Err wait maybe my brain isn't working right... thinking..