A line that is falling towards the x axis represents an object that is negatively accelerating, or slowing down. When the line hits the x axis, the object has stopped moving. If the graph continues below the x axis, the object has changed direction and is moving backwards at increasing velocity.
I think it's d......... Good luck
Answer:
not sure just need points
Explanation:
a+b+c
Static friction because the rocks arent moving are they?
