What do you expect to find out?
1. Make a ramp using a piece of card and some books. 2. Put the car at the top of the ramp and let it run down. How many straw lengths does it roll away from the bottom of the ramp? 3. Make the ramp steeper. Let the car run down. How many straw lengths does it roll now? 4. Make the ramp even steeper. How many straw lengths does it roll? 5. What happens to the distance the car travels as the ramp gets steeper? 6. Why?What conclusions can you draw?