Question

Which block do you think will slide down the ramp most quickly?

Rubber block
Or
Steel block

Please explain why

Answer 1

Steel because of friction. When rubber moves over smooth surfaces, it's the molecular forces between the two that are the main cause of friction. But when the surface is rough, it's the deformation of entire molecular layers of rubber that's the chief cause of friction.

Answer 2

Steel block because if you think about the friction it would make it more fast and therefore it would go faster