1) Falling toward Earth with a parachute is an example of what type of friction? a Sliding b. Fluid c Rolling d Static 2) What is the weakest type of friction that occurs between solid surfaces? a. Sliding b. Fluid c. Rolling d. Static 3) Which of the following is not a method of reducing friction? a by polishing the surfaces b. by using lubricants c by using ball bearings or roller bearings d. spreading sand on icy roads 4) Which type of friction is evident on a ball thrown upward? a air friction b. rolling friction C. Sliding friction d. static friction 5) Which of the following shows an example of an object that is in motion? a a book on top of a table b. a car that is parked on a lot b. a child running around a tree d. a dog that is resting under a tree the force of 6) You push a cart and it does not move. The force you applied is the friction acting on the cart a less than b. more than C. equal to or less than d. equal to or more than 7) What causes your hair to stand after being rubbed against a balloon? a friction b. gravity Cheat d. static electricity 8) Which of these has the tendency to change the state of motion of an object? b. force a acceleration C. mass d. weight
