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?
- In what direction is the "normal" force on a system?
- Friction depends on the kind of what in contact?
- What is a contact force that opposes the movement of objects past each other?
5 True/False questions
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?
Opposite direction → What is a contact force that opposes the movement of objects past each other?
Moving past each other → There is greater friction between two stationary (still) objects than when they are what?
For every action there is an equal but opposite reaction → In the formula for accelerated motion, what do the variables mean and what are the units for each variable?
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 first law of motion is known as the law of inertia, what does this law state?