Science - The Great Race

My car consists of two big tires, two small tires, two popsicle sticks, rods to hold the wheels together, and little brackets to hold the rods and wheels in place. First, I took two small yellow rods and glued them on either sides of the popsicle sticks. I then attatched the two wheels in the front by pushing them into the rods. Next, I added a yellow bracket to connect more rods to each side of the back rod. After that, I pushed two big wheels into the extended rods on both sides of the back of the car. To hold the wheels in place, I took two small black clip brackets and pushed them on either sides of the wheels with a little room for the wheels to role around.

My car demonstrates Newtons First Law. Newtons First Law states that "An object at rest will stay at rest and an object in motion will remain in motion at constant velocity unless acted upon by an unbalanced force". When I hold my car on top of the ramp, it is at rest and has potential energy. When I release the car from my grasp , the potential energy is converted to kinetic energy and the car starts moving. The outside force, or in this case my hand, is what triggers the car and makes it move. After a while, the car will start slowing down. This is because of friction. Friction, in this scenerio, is the unbalanced force. Friction between the wheels of the car and the surface slows the car down and eventually brings it to a halt.