Question

Students roll toy cars down the same ramp with different coverings like carpet, foil, and sandpaper. What are they trying to test

Answer 1

Answer:

the roughness of the surface

Explanation:

Answer 2

Students roll toy cars down the same ramp with different coverings like carpet, foil, and sandpaper are trying to test the friction of the surface.

• The resistant force that is felt by an object when slid or pushed through a surface is called friction.
• The main reason behind friction is the force of attraction between the molecules of the objects that are slid or pushed against each other. As we know all matter is made of atoms and molecules, the electronic attraction formed by the particles of the two objects gives rise to an opposing force that is friction.
• Frictional force can be of two types, those are Kinetic friction and Static friction.