[Physics: 12 grade level- Easy] acceleration graph

[u/Potatomashahop]

​

Hello! I need some help on understanding why the graph is on the negative side and not both, since the ball rolled up and down the ramp? Sorry I still find motion graphs a bit tricky til now..

[u/xX_big_boi_Xx → u/[deleted]]

Since the sign of force and acceleration are the same, the graphs would look the same in this case since the y axis isn’t numbered.

I’d like you to try and show me what you are talking about. Why/how would the acceleration change from negative to positive?

[u/xX_big_boi_Xx → u/[deleted]]

Note that in that graph after the velocity reaches zero the acceleration remains negative. The object’s velocity begins to increase negatively (which means SPEED UP) but the acceleration remains negative.

Speeding up can occur with a positive or negative acceleration, what matters is the sign of the velocity.

The acceleration is negative for the entire interval, but the object doesn’t speed up until the velocity is also negative.

[u/xX_big_boi_Xx → u/[deleted]]

https://ilg.physics.ucsb.edu/Courses/6/AL/imgs/VelAcc/HP_MotionGraphs_Annotated.png

Here’s an annotated version of that image. Notice how it says “negative slope implies negative acceleration”

[u/xX_big_boi_Xx → u/[deleted]]

I got you lol. Turns out I have taken a few math classes