Wednesday (7 Oct):

Key Concept's) Today: Free Fall

Continue : Power Point (Key Scientists)

on Thurs 7 Oct

L #10: 1- 3, 7 - 10, 14, 17   (Change)  Due Thurs 7 Oct (Motion Graphs)

Wed 6 Oct  Lab#4: Ball Toss 

L #11:  1- 4, 9, 11,  13, 15, 18 Due Mon 11 Oct (Newton's 2nd & 3rd)

Tues 12 Oct Lab#5: Unknown Mass

L #14:  1- 3, 5, 10, 11, 14 Due  Wed 13 Oct  (Free Body)  

Thurs 14 Oct:

Re-View for Test tomorrow on Newton's Laws

Fri 15 Oct: Test Newton's Laws

& L # , 7, 8, 10, 11, 14

L #9: 1- 8,  11-16    Due Mon 18 Oct (Torque)

L #12: 1- 14,  16, 17    Due Wed 20 Oct (Work & Power)

L #13: 1- 13,  18, 19    Due Friday 22 Oct (Instantaneous Vel & Acc)

Lab:  Ball Toss

Hypothesis:

While the ball is in the air (up & down), draw the position, velocity, and acceleration.

    X                          V                              A

             T                        T                                  T

Ball Toss

In this experiment, you will use a Motion Detector to collect position, velocity, and acceleration data for a ball thrown straight upward.

Materials

Procedure:

1.   Connect the Vernier Motion Detector to the computer as instructed.

3.   Open the file “06 Ball Toss” from the Physics with Computers folder.

4.  Click  to begin data collection. Wait 1 second & toss the ball straight upward above the Motion Detector and let it fall back toward the Motion Detector.  (Be sure to move your hands out of the way after you release it.)

5.   Repeat Step 4 if your position vs. time graph does not show an area of smoothly changing position and straight lines for changing velocity and acceleration.

Data: (Print the graph) and....

1. Examine the graphs and highlight the region where the ball is in free fall on all three graphs:

·   Label the region on each graph where the ball was in free fall and moving upward.

·   Label the region on each graph where the ball was in free fall and moving downward.

2. Label the following items of Free-Fall:

a. apex.

b. Points of Maximum speed & list speed

c. The slope (& calculate the slope) on position vs time graph (Pt)?

d. The slope (& calculate the slope) on velocity vs time graph (Vt)?

e.   The graph of acceleration vs. time should appear to be more or less constant. Write the value of acceleration on the graph?

For the next several questions, consider the velocity-time plot below for the motion of an object along a horizontal surface. The motion is divided into several time intervals, each labeled with a letter.

3. During which time interval(s), if any, are there no net forces acting upon the object? List all that apply.

4.  During which time interval(s), if any, is the acceleration negative? List all that apply.

5. During which time interval(s), if any, is the net force acting upon the object directed toward the left? List all that apply.

L #11:  1- 4, 9, 11,  13, 15, 18 Due Today Wed 7 Oct (Newton's 2nd & 3rd)

L #14:  1- 3, 5, 10, 11, 14 Due Monday 12 Oct  (Free Body)

:

• Differentiate between mass and weight and the relationship with gravity
• Differentiate between force, displacement, distance, inertia, speed, velocity and  acceleration.
• Be aware of major historical individuals and their contribution to the concept of motion.
• Demonstrate proficiency in solving problems using displacement, distance, inertia, speed, velocity and average acceleration.
• Measure and describe the sum of all the forces acting on an object.
• Analyze the effects of balanced and unbalanced forces on the motion of an object
• Predict motion of an object based on inertia and forces (balanced and unbalanced)
• Describe and analyze how forces interact between objects
• Analyze how physical, conceptual, and/or mathematical models represents and are used to investigate objects, events, systems and processes.  
• Demonstrate understanding of Free Body Diagrams by drawing Free Body diagrams for static, constant velocity and accelerated motion for single bodies and multiple attached bodies.
• Demonstrate proficiency in solving problems using Newton’s 1^st, 2^nd, & 3^rd, Laws of Motion

• Generate and evaluate questions that can be answered through scientific investigations.
• Apply understanding by planning, conducting, reporting and evaluating  systematic and complex scientific investigations of objects, events, systems, and/or processes.
• Revised a scientific explanation using additional/new evidence, data, and inferential logic.  
• Analyze local, regional, national, or global problems or challenges in which scientific design, technology or engineering can be or has been used to find a solution.

Go over L #11