Sunday, October 30, 2016

Assignment 25: Relative Velocity



Activity 25.05

Pick up a paper copy of this document on relative velocity and read.

Activity 25.10

Read Section 3.5 in the textbook.

Do the following  relative velocity practice problems.


Check your answers here.


Activity 25.20
Pick up a paper copy and run and answer the questions in this Riverboat Simulator.   When done check your answers here.


Activity 25.40

Pick up a paper copy of the Activity 17.40 Problem Set.  When done check your answers here.


Activity 25.50

Do problems 27 -> 30 on page 159  in the Section 6.3 hand out.


Activity 24: 2D Projectile Problems: James Bond & Field Goal Kicking




Complete these questions and check your answers here....


Thursday, October 27, 2016

Activity 23: Fenway Park & Airplane Problems




Pick up a copy of the  Fenway Park and the Bombing Run  problems.

When done check your answers here and here.


Activity 22: Projectiles Launched at an Angle





Activity 38.20

Obtain a copy and review the  chart in this document highlighting the computation of the horizontal and vertical components of an object launched with velocity V0  at an angle  in this document.  Notice the use of Sine and Cosine functions to compute the components.

Review the following problem solving strategy:

Problem Solving Strategy

1. Make a sketch of the situation and label all given and unknown quantities.

2. List all of the equations that apply to the problem.

3. Determine what variables are known and needed.

4. Substitute the given quantities into the equation using proper units.

5. Solve the equation, carrying units throughout the problem.


6. Check your answer to make sure it makes sense.


Use the strategy to complete the answers to problems # 4, 5 and 6 in the above document and check your answers here.


Monday, October 24, 2016

Activity 21C: Projectile Problems


Read Sections 3.1 and 3.4  in the  OpenStax Textbook. 

Answer problems 25, 26, 27, 34, 41 & 42 at the end of the chapter on page 123.

When done check your answers here.

21b: Projectile Seminar Problems

Activity 24.10

Try and solve the following  projectile problem.

A ball is launched horizontally off a 200m cliff, with a horizontal speed of 10 m/s.
How far from the base of the cliff does the ball land?

After attempting to solve this problem check your answer by watching this video on projectile motion.




In this packet of 5 seminar projectile problems complete the 1st problem (David vs Goliath) and review your solution with your teacher.


Complete seminar problems 2 - > 5 and review your answers here.







Friday, October 21, 2016

Friday, October 14, 2016

Activity 20: Acceleration Problem Sets 5 & 6


Activity 20.10
Pick up a copy of acceleration problem
 set #5 and complete these problems.  When done check your answers against this answer key.

Activity 20.20  

Pick up and complete a  copy of this acceleration Problem Set 6, and check your answers here.




Activity 19 More Acceleration Problems


Activity 19.10

Complete problems 41, 42, 44, 46, 51and 53 on pages 83-84 in the  OpenStax Textbook. 

When done check your answers here.....



Wednesday, October 12, 2016

Activity 18: Acceleration Problem Set 4

Activity 18.10


Read Section 2.6 & 2.7 in the  OpenStax Textbook. 

Answer the questions in this problem set. (obtain a printed copy from your teacher) When done check your answers here.





Activity 17A - Seminar Problems & Solutions

Activity 27.10





Remember:
An object in free fall is accelerating at 9.8 m/s^2 down all the time.

So an object tossed or hit upwards is slowing down at a rate of 9.8 m/s all the way up, and speeding up at a rate of 9.8 m/s all the way down.
  • At its peak,  an  object in free-fall has a vertical velocity of zero (for an instant). 
  • The motion of an free falling object tossed up is perfectly symetrical.  It takes the same amount of time to go up, as it takes to go down,  and it's speed going up is the same as it's speed going down at every vertical height.

Complete these two seminar problems on Free Falling bodies. (You do not need to do section f: "using logger pro"  on the second Romeo & Juliet problem) When done check your answers here.

    Tuesday, October 11, 2016

    Activity 16: Displacement as the Area Under the Velocity-Time Curve and Solving Non-Constant Acceleration Problems

    Activity 14B

    Watch this video which describes displacement as the area under a velocity-time graph.

    Read this document which reviews the concept that the area under a velocity-time graph  is the object's displacement.

    Activity 16.20
    Examination of the motion in a velocity time graph should help make clear why the equations of kinematic motion only apply in situations where the acceleration of the object is constant.  In situations however where an object's acceleration is not constant it is often possible to divide up the problem into sections where the acceleration in each section is constant and then apply the equations in each section to calculate the needed information.

    A good example of this is found in this link to a Student Driving Situation.  Solve the question posed in this exercise (ask your teacher for a paper copy) and compare your answer with this key.


    Activity 16.30

    Ask your teacher for a paper copy of Acceleration Problems Set #3.  Complete this problem set and compare your answers against this key


    Activity 16.40 

    You are ready to take this acceleration pre-quiz.  Compare  your answers with this key.





    Thursday, October 6, 2016