Question

22.) based on both experiments, which sandpaper and block material combination would be expected to have the least friction of all the possible combinations? a.) rubber and sand paper a b.) wood and sand paper b c.) glass and sand paper c d.) steel and sand paper d

Explanation:

To determine the combination with the least friction, we consider the nature of materials. Glass (a smooth material) and sandpaper C (likely the smoothest sandpaper among options, as smoother surfaces have less friction) would have the least friction compared to rubber (high friction with rough surfaces), wood (moderate friction), or steel (but sandpaper D's roughness isn't indicated to be lower than C for glass). So Glass and sandpaper C (Option C) is expected to have the least friction.

Answer:

C.) Glass and sand paper C