Jan 23-25

Week of January 23-25

Physics Lesson Plans

Instructor: Melissa Stokley

 

Monday-Tuesday:  No School For Students!!

Wednesday:

  1. Prebell – Is it possible for a moving car to have an acceleration of zero?  Explain your answer.
  2. Review weak areas from last week’s test.
  3. Interpreting Graphs – students will look at several graphs of the variable we have been studying
    1. Distance/Displacement vs Time – students will use these  graphs to determine information about velocity
    2. Velocity vs Time – students will use these graphs to determine information about acceleration
    3. Accleration vs time – students will interpret these graphs and answer questions about the motion of the object
  4.  Advanced Problem Solving – students will solve problems using the equations for velocity, displacement and acceleration.  These problems will relate to real-life scenarios (how long will it take a policeman to catch a speeding car, how long will it take to bring a moving car to a stop, etc.) but require multiple steps to solve the problem.
  5. Closure - -List ways in which these equations can be used in real life situations

 

Thursday:

  1. Prebell – Solve problems on pg 49 of textbook
  2. Lecture/Discussion – Free fall acceleration, gravity
  3. Students will compare the equations from the previous unit to the equations for free-fall acceleration and note their similarities.  It will be easier to remember the equations if the students realize they are only variations of equations they have already used.
  4. Problem solving with free-fall acceleration.  Students will use the equations for free-fall acceleration to solve problems.  Again these problems deal with real-life scenarios to show relevancy to students.
  5. Activity – Test reaction times.  Students will use the free fall equations to determine their reaction times when catching a falling object.
  6. Closure – compare reaction times, determine who had the fastest reaction time

 

Friday:

  1. Prebell – Explain why a hammer and a feather will fall at the same rate on the moon, but not on Earth?
  2. Activity/Lab – Compare fall times and final velocities of various objects
    1. Students will gather various objects and drop them all from the same height.  Students will measure drop time for the object.
    2. Students will use the equations provided to calculate what the drop time should be and compare them the drop times they recorded.  If there are any discrepancies, they must explain why the discrepancy occurred.
    3. Students will calculate the final velocity of each object using the equation vf = vi + at (they will use the time that the measured for the t).  They will then calculate final velocity using the equation vf2 = vi2 – 2gy.  The final velocities should match.  If not, students should brainstorm to develop some hypotheses as to why they do not match.
    4. Compare data for all objects.  Determine which objects are most affected by air resistance.
  3. Closure – Complete lab handout.  Write conclusions for this lab.