1. Which of the following situations shows the presen
A. an object that falls off on smooth surface
B. a man staying in place as others move
C. a car that continuously rolls down the hills
D. A jeep stops when the driver steps on the brake
2. Which of the following statements about friction is t
1. Smooth surfaces have more friction.
II. Friction slows down a moving object.
Objects move slowly on rough surfaces.
IV. Friction is not present in smooth surfaces.
A. I, II B. II, III C. I, III
3. Which of the following best describes friction?
It is a force that occurs
A. between solids
B. only on rough surfaces
C. between solide​