Bell Ringer: Find the average speed of the boat from the graph below. Agenda: 1. Bell Ringer 2. What is Acceleration? 3. Exit Slip distance final = distance

Bell Ringer: Find the average speed of the boat from the graph below.

Agenda:Agenda:1. Bell Ringer1. Bell Ringer2. What is 2. What is Acceleration?Acceleration?3. Exit Slip3. Exit Slip

distancefinal=distanceinitial=

timeinitial=timefinal=

distancefinal-distanceinitial=

timefinal-timeinitial

I should be able to: Complete the following velocity an acceleration based on the graph shown

Lecture/Notes: What is Acceleration?

Specifics of AssignmentSpecifics of Assignment-Complete filling in blanks in workbook- Analyzing data from graphs-Reading and understanding terminology

Reviewing Speed

In what time period is the boat speeding up?a. 9 secondsb. 6 secondsc. 4 secondsd. 7 seconds

In what time period is the boat speeding slowing down?a. 9 seconds b. 6 seconds c. 4 seconds d. 7 seconds

In what time period is the boat showing no change in speed?a. 9 seconds b. 5 seconds c. 4 seconds d. 7 seconds

How am I graded?How am I graded?BM 3: I can understand basic terminologyBM 5: I can determine how one variable changes as the value of another variable changesBM 6: I can translate information into a table, graph, or diagram. BM 8: I can identify and/or use a mathematical relationship between data.




Analyzing Graph and Variables

Speed is usually graphed using a line graph.

Time is the independent variable and thus always on the x axis. Distance is the dependent variable and always on the y axis.





Graphing Speed

Distance (Y) Time (X)

30 15

40 20

50 30

60 50

90 60

Directions: Graph the following data in your workbook




Specifics of Specifics of AssignmentAssignment

-Complete filling in blanks in workbook- Analyzing data from graphs-Reading and understanding terminology

Graphing Speed

Distance (Y)

Time (X)

30 15

40 20

50 30

60 50

90 60

Directions: Graph the following data in your workbook





Understanding Velocity

Velocity is the speed of an object, but the direction is also included. It is calculated the same as speed, but you must include a direction in your answer.

Example: a car was moving 12 mph toward the north.





Understanding Velocity Review

Directions: Choose which answer is an example of velocity.

a. 125 cm/secb. 30 km/h northwest

c. 350m/sec northd. 520 km/h





Understanding AccelerationAcceleration is the rate of change of velocity. A change in velocity can be either a change in speed, or direction, or both.

Deceleration is when acceleration has a negative value.

The formula for calculating acceleration is:

Acceleration (a) = final velocity (vf) – initial velocity (vi)

time (sec)

The unit for velocity, in this case, is

m/s/s OR m/s2





Understanding AccelerationAcceleration is the rate of change of velocity. A change in velocity can be either a change in speed, or direction, or both.

Deceleration is when acceleration has a negative value.



time (sec)


m/s/s OR m/s2





Acceleration Math Problems

A jet starts at rest at the end of a runway and reaches a speed of 80 m/s in 20 s. What is its acceleration?



time (sec)


m/s/s OR m/s2





Acceleration Math ProblemsA skateboarder is moving in a straight line at a speed of 3 m/s and comes to a stop in 2 sec. What is his acceleration?



time (sec)


m/s/s OR m/s2





Acceleration Math ProblemsA skateboarder is moving in a straight line at a speed of 3 m/s and comes to a stop in 2 sec. What is his acceleration?



time (sec)


m/s/s OR m/s2






Acceleration Reading












































































Exit Slip: What is the equation to find acceleration?

Agenda for Agenda for NEXT LESSON:NEXT LESSON:1. Bell Ringer 1. Bell Ringer 2. 2. Free FallFree Fall

3. Exit Slip3. Exit Slip

Documents

Bell Ringer: Find the average speed of the boat from the graph below. Agenda: 1. Bell Ringer 2. What is Acceleration? 3. Exit Slip distance final = distance