I'm not an idiot so I'm pretty sure c and d are not the answers. I'm confused because don't they both do this. As it picks up speed it uses kinetic energy but its the gravity pulling it down.
When driving downhill, your vehicle will accelerate and start moving fast, due to _______________.
A. kinetic energy
B. gravity
C. the amount of pressure you put on the accelerator pedal
D. wet pavement