Question

ms newtons class was conducting experiments on forces and friction. the students set up the ramp seen here. they measured the force needed to pull a wood block up the wooden ramp. that was their control or standard of comparison. they used a force of 65 newtons to pull the block to the top of the ramp. student groups took turns changing the surface of the ramp on the left, beginning with carpet. will there be more or less friction than the ramp? predict how the friction force will change on each of the trial surfaces. drag each surface to one of the two columns.
less friction/less force
more friction/more force

Explanation:

Step1: Understand friction concept

Friction depends on surface roughness. Rougher surfaces have more friction.

Step2: Compare carpet and wood

Carpet has a rougher surface than wood. So, the friction force on carpet - covered ramp is more.

Answer:

Carpet - covered ramp: More Friction/More Force; Wood - covered ramp: Less Friction/Less Force