what would be an ideal experiment to test how different types of surfaces affect friction?
A)Two objects of equal weight placed on two glass surfaces of equal lengths
B)Two objects of equal weight placed on two glass surfaces of unequal lengths
C)Two objects of equal weights placed on a glass surface and wooden surface
D)Two objects of different weights placed on two wooden surfaces of unequal lengths
C)Two objects of equal weights placed on a glass surface and wooden surface. To test how different types of surfaces affect friction, you should use different SURFACES instead of different WEIGHTS. Note this down!
