Did I do this problem correctly?

[stark sky]

No thats not right

[tawdry solstice]

But the blue curve has to be the position function though right?

because how can you have negative velocity/accelation

[cinder lance]

what

you can go backwards, that's negative velocity

[tawdry solstice]

then the curve would be going left?

[cinder lance]

the left-right is time

if you go backwards, you go down, not left

speed is the thing that can't be negative

velocity and accelration are signed

i get what you meant now

[tawdry solstice]

also how do you tell time is the x axis

[cinder lance]

the answer is green is position
it never goes down, so Velocity never becomes negative, so it's red

red goes down. so acceleration becomes negative, so it's blue

at the same moment Blue becomes negative, Red starts going down, that's how it works

it's just always time

[tawdry solstice]

so acceleration and velocity will always go in opposite directions on the graph in these types of questions?

[cinder lance]

crossing 0 on one line means changing direction on another

you can see that Green alsmot started going down, because Red almost crossed zero

[tawdry solstice]

so when blue crossed 0, that forced the red curve to go downward?>

[cinder lance]

of course

[tawdry solstice]

thanks for explaining it^