Answers to 7+8 Review Sheet (for Test Thurs/Fri)

1.  2.45 x 10^-8 N
2.  2.64 x 10^17 N
3.  37200 m/s
4.  7.53 m/s  (I should have given you equation for static friction, not kinetic, although they are the same)
5.  5.8 m/s
6.  9500 N
7.  4.3 N m
8.  0.305 m
9.  0.44 m
10.  18 kg m^2
11.  0.25 kg m^2/s
12.  25 kg m^2/s
13.  1.9 rad/s

2/25-3/1

• Mon 2/25:  Check off problems 14-16 on 7+8 problem worksheet and go over.  Sky Lab Videos.   Bicycle wheel and spinning platform demo.  Hand out 7+8 Review and work on it.  7+8 Test on Thurs/Fri.
• Tues/Wed 2/26-2/27:  Questions on 7+8 Worksheet?  Start Simple Harmonic Motion.  Pendulum Lab.
• Thurs/Fri 2/28-3/1:  Turn in 7+8 Review.  Take 7+8 Test.  Finish Pendulum Lab and find Master Equation.  Spring Inquiry Lab next week.

2/13-2/22

• Wed/Thurs 2/13-2/14:   Check off problems 1-8 and go over.  Introduce torque.  Finish Circular Motion Lab and turn in.  Problems 9-10 for Friday.  Start Torque Lab if time.
• Fri 2/15:  Short Classes. Check off problems 9-10 and go over.  Introduce Newton's 2nd Law for rotational quantities.  Problems 11-13 for Tues/Wed.
• Mon 2/18:  Presidents' Day.  No School.
• Tues/Wed 2/19-2/20:  Check off problems 11-13 and go over.  Torque Lab.  Introduce Physics in Motion Project.
• Thurs/Fri 2/21-2/22:  Conservation of Angular Motion.  Problems 14-17 for Monday.  Video from Skylab.  Research for Physics in Motion Project.

A brand new semester!

• Mon 2/4:  Hand back final exams, check them over, and recollect.  Conservation of Momentum.  Problems 9-16 on Chapter 6 problems due Thurs/Fri.
• Tues/Wed 2/5-2/6:  Conservation of Momentum w/ objects going opposite directions.  Ballistic Pendulum Quick Lab done one table at a time.  For those who finish early, go to Collision Lab Simulation on my website, do 5 different trials recording mass 1, velocity 1 initial, velocity 2 initial, mass 2, velocity 2 initial, and velocity 2 final.  You need to record the initial velocities before you press  "Play" then record the final velocities.  Finally, for each case, calculate the momentums, and see if momentum is conserved.
• Thurs/Friday 2/7-2/8:  Check off problems 9-16 and go over.  Turn in Ballistic Pendulum Lab (neat, organized data table, uncertainty of height, and calculations for speed of ball and pendulum arm together, and speed of ball before it hit pendulum arm).  Elastic and inelastic collisions.  Newton's Cradle.  Explain centripetal acceleration and go over the equations for centripetal acceleration and centripetal force.  Do problems 1-5 on 7+8 problems for Mon/Tues.
• Mon/Tues 2/11-2/12:  Check off problems 1-5 and go over.  Circular Motion Lab.  Universal Law of Gravitation.  Do problems 1-8 on 7+8 Worksheet for Wed/Thurs.