The Lost ShipThe Lost Ship You are a member of the US Coast Guard on You are a member of the US Coast Guard on

duty at coastal headquarters when you begin duty at coastal headquarters when you begin getting distress calls from a cargo ship that getting distress calls from a cargo ship that has been hijacked by modern day pirates. has been hijacked by modern day pirates. They’re taking the ship as fast as it can go in They’re taking the ship as fast as it can go in a straight line out to international waters to a straight line out to international waters to escape. All you have is the following data escape. All you have is the following data showing the ship’s location at certain times. showing the ship’s location at certain times. You need to radio the nearest USCG gun You need to radio the nearest USCG gun ship immediately and tell them the cargo ship immediately and tell them the cargo ship’s ship’s current current coordinates and velocity. coordinates and velocity.

The Lost ShipThe Lost ShipTimeTime X positionX position Y positionY position

1:001:00 201km E201km E 50km N50km N

1:301:30 230km E230km E 51km N51km N

2:002:00 261km E261km E 50km N50km N

2:302:30 291km E291km E 49km N49km N

3:003:00 320km E320km E 50km N50km N

The CG HQ is the origin of these coordinates. The current time is 3:58. Hurry! Time is of the essence!• Write out all calculations and graphs made to help you find the ship and explain any estimations or rounding that was done. Write out what was said between you and the captain of the USCG ship when you radioed him the necessary information.

Lesson #4Lesson #4Topic: Topic: Distance and DisplacementDistance and Displacement

Objectives: Objectives: (After this class I will be able to)(After this class I will be able to)

1. Describe the difference between distance and displacement, and speed and velocity

9/4/07

Assignment: New Wikispace post. Read and respond.

Project: Walk a distance of 4 meters without having any displacement. Have your partner measure for you.

Find the distance and displacement traveled for a person who walks 6 m North, 6 m East, 6 m South, and 6 m West.

Dis

tanc

e = 0

m D

isp.

..

Dis

tanc

e = 0

m D

isp.

..

Dis

tanc

e = 2

4m D

isp.

..

Dis

tanc

e = 2

4m D

isp.

..

0% 0%0%0%

1.1. Distance = 0m Distance = 0m Displacement=0mDisplacement=0m

2.2. Distance = 0m Distance = 0m Displacement=24mDisplacement=24m

3.3. Distance = 24m Distance = 24m Displacement=0mDisplacement=0m

4.4. Distance = 24m Distance = 24m Displacement= 24mDisplacement= 24m

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Distance: Distance: Add up the entire length Add up the entire length traveled.traveled.

Displacement:Displacement: Measure the distance and Measure the distance and direction between the starting point and direction between the starting point and ending point. ending point.

Speed: Speed: Distance divided by timeDistance divided by time

Velocity: Velocity: Displacement divided by timeDisplacement divided by time

Practice ProblemsPractice ProblemsA man walks 20 m east, then 5 m south, then 10 m west, then 3 m south, then 5 m west, then 4 m north, and 5m west.

What is the total distance the man walked?

What is the man’s displacement?

Calculate the average speed of a cheetah that runs 140 m in 5 seconds.

.035

7m/s

28m

/s

700

m/s

Fas

ter t

han a

hip

po b..

0% 0%0%0%

1.1. .0357m/s.0357m/s

2.2. 28m/s28m/s

3.3. 700m/s700m/s

4.4. Faster than a Faster than a hippo but slower hippo but slower than a rhino than a rhino

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Calculate how long it takes Charlie to run to the store 4km away if he runs with an average velocity of 8km/hr.

30

min

utes

2 h

ours

.5 m

inut

es

32

hours

0% 0%0%0%

1.1. 30 minutes30 minutes

2.2. 2 hours2 hours

3.3. .5 minutes.5 minutes

4.4. 32 hours32 hours

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9/8/06

Assignment: 9/5/07 Study guide and quiz 2.3

9/6/07 Ch 2 Supplemental Problems

Task: Collect data with a motion detector to trace a graph on the computer screen.

Lesson #6Lesson #6Topic: Topic: Lab #1 Graphing Motion

Objectives: Objectives: (After this class I will be able to)(After this class I will be able to)1.Describe the motion of an object given a

distance vs. time graph

What is the object doing?What is the object doing?

Distance

Time

7 m

10 s 0 m, 0 s

What is the average velocity of a person who jogs 12 km in 2 hours? State your answer in meters / second?

6m

/s

1.6

7m/s

24m

/s

100

m/s

0% 0%0%0%

1.1. 6m/s6m/s

2.2. 1.67m/s1.67m/s

3.3. 24m/s24m/s

4.4. 100m/s100m/s

0of20

Objectives: Objectives: (After this class I will be able to)(After this class I will be able to)

1. Create a distance vs. time graph of the motion of an object

Lesson #5Lesson #5Topic: Topic: Velocity and GraphingVelocity and Graphing Motion Motion

9/7/07

Assignment: “Velocity and Graphing”

Cool T-Shirt Quiz

Project: Create a graph of the motion of the following object.

Insert video of car moving or show car moving on track

Graphing MotionGraphing MotionA woman walks out of her house towards her car. The car is 6 m away and it takes her 3 seconds to get there.

She sits in her car for 5 seconds until she realizes she forgot her keys.

She jogs back to the house in 2 seconds.

Distance

Time

6 m

3 s 8 s 10 s 0 m, 0 s

Graphing MotionGraphing MotionThe velocity of the woman at each section of time is the slope of the Distance vs. Time graph.

Slope = change in rise / change in run

Example: change in distance / change in time

Distance

Time

6 m

3 s 8 s 10 s 0 m, 0 s

Graphing MotionGraphing MotionFind the velocity for the first, second, and third sections of time in this graph.

Distance

Time

6 m

3 s 8 s 10 s 0 m, 0 s

English Project English Project You are writing a short adventure story for your You are writing a short adventure story for your

English class. In your story, two submarines on a English class. In your story, two submarines on a secret mission need to arrive at a place in the secret mission need to arrive at a place in the middle of the Atlantic ocean at the same time. middle of the Atlantic ocean at the same time. They start out at the same time from positions They start out at the same time from positions equally distant from the rendezvous point. They equally distant from the rendezvous point. They travel at different velocities but both go in a travel at different velocities but both go in a straight line. The first submarine travels at an straight line. The first submarine travels at an average velocity of 20 km/hr for the first 500 km, average velocity of 20 km/hr for the first 500 km, 40 km/hr for the next 500 km, 30 km/hr for the 40 km/hr for the next 500 km, 30 km/hr for the next 500 km and 50 km/hr for the final 500 km. In next 500 km and 50 km/hr for the final 500 km. In the plot, the second submarine is required to the plot, the second submarine is required to travel at a constant velocity, so the captain needs travel at a constant velocity, so the captain needs to determine the magnitude of that velocity. to determine the magnitude of that velocity.

English ProjectEnglish Project Graph the motion of the first sub on a distance Graph the motion of the first sub on a distance

vs. time graph.vs. time graph. Then graph the motion of the second sub on the Then graph the motion of the second sub on the

same graph to help the Henson visualize the same graph to help the Henson visualize the motion of both subs. motion of both subs.

Write the conversation between the captain and Write the conversation between the captain and Henson of the second sub explaining how he Henson of the second sub explaining how he calculated the correct speed.calculated the correct speed.