How do you calculate the speed and velocity of a negative sloped vehicle? ?

there is none

lol

it is not moveing

Well technically yes you can. It just means that the vehicle is returning back. Let me give an example do I got put out of home and I’m going to school. Then after school I go home (that will be my negative slope since I’m returning back home). So basically all you will have to say is the vehicle is (units go here not on the line) towards where ever it’s going
I hope it helps

9>I.