Preparation for Test #2 (chapters 5, 6, 7, 8)
Concepts and Skills you should be able to demonstrate
- Demonstrate a conceptual understanding of Newton's first and second laws of motion.
- Determine the direction of the net force acting on on an object.
- Determine the direction of acceleration for an object with several forces acting on it.
- Correctly draw a complete free-body-diagram (coordinate axes, break forces into components) from a problem statement.
- Using a free-body-diagram, write down the x and y components of Newton's second law to obtain the equations you would need to solve a problem
- Given a problem statement, draw a sketch (identifying the forces), construct a complete free-body-diagram, use Newton's second law to set up the equations, and solve for the unknown variable.
- Solve a two-dimensional motion problem (given ax and ay)
- Solve a projectile motion problem (ax=0 and ay=-9.8 m/s2)
- Change between linear (tangential) velocity and angular velocity.
- Determine the direction of acceleration for an object traveling in a circular path.
- Draw a complete free-body-diagram for a problem involving circular motion
- Given a problem statement involving uniform circular motion, draw a sketch (identifying the forces), construct a complete free-body-diagram, use Newton's second law to set up the equations, and solve for the unknown variable.
- Given a problem statement, draw a picture, identify all forces acting on each part of the problem, and identify all of the action-reaction force pairs.
- For a problem involving two or more interacting objects, draw free-body diagrams for each object taking care to correctly draw the lengths of each force vector according to Newton's 2nd and 3rd laws. You might also be asked to rank the forces (with explaination of your ranking).
NOTE: the smart way to use a practice test is to actually take it as a test with a 1-hour time limit in an uncomfortable room (classroom or library). The not-so-smart way to use a practice test is to just work through the questions as if they were homework questions. REMEMBER: There is no guarantee your test will have the same questions as on this practice test.
Here's a the answers --- but don't look at these until after you have worked the practice test.