inquiry/ incline plain

LI; to learn about what an incline plane is. today for inquiry we did incline plain.The thing i learnt about incline plain an incline plain ,also known as a ramp is a flat supporting surface. what we had to do was that we had to make a copy of this slide on the bottom then we had to get a car then we had to test the car going on a ramp high low and see if it can go fast we used a cardboard to see if it can go any way like low high medium our on the floor but when i put the cardboard on the floor the car did't go fast like when we put it up high then it well go fast but it not like that.