5 Written questions
5 Multiple choice questions
- Friction always occurs between systems in what?
- The magnitude (amount) of friction is proportional (increases / decreases as the other increases / decreases) to the what acting on the system?
- List and explain the four types of friction.
- The friction vector acts in what direction with respect to the system's motion?
- There is greater friction between two stationary (still) objects than when they are what?
5 True/False questions
Newton, Galileo → What property of matter makes it want to continue to move indefinitely unless acted upon by an outside force?
Perpendicular to the surface → In what direction is the "normal" force on a system?
Objects at rest tend to remain at rest and objects in motion tend to remain in motion unless acted upon by a force → Newton's third law is the law of action-reaction, what does this law state?
The acceleration of a system is directly proportional to the force and inversely proportional to the mass, F = ma → Newton's third law is the law of action-reaction, what does this law state?
Friction → What is a contact force that opposes the movement of objects past each other?