Bell-ringer: 5 min. 2. Which situation is an example of Newton’s third law of motion? A. A ball in a vacuum container moves in a straight line at a constant.

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Presentation transcript:

Bell-ringer: 5 min. 2. Which situation is an example of Newton’s third law of motion? A. A ball in a vacuum container moves in a straight line at a constant velocity. B. A ball in a vacuum container accelerates when kicked with a great amount of force. C. A person riding in a forward-moving car continues to move forward when the car stops suddenly. D. A person in a canoe moves the paddle backward in the water, and the canoe moves forward in the water.

Mantra - Your Turn! Today is a great day for science because: science is power. We are powerful because: We always make a difference.

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Connections Friday Brainstorm an object with the fastest velocity or acceleration you know OR Talk about your favorite trip and how you travelled by distance and displacement

Kinetic Motion Focus on 3 descriptions: Distance (d) Displacement (x) Speed (s) Velocity (v) Acceleration (a)

Speed vs. Velocity Speed (s): Distance / Time =d/t All the distance you move in any direction vs. the time you spend moving Scalar! Velocity(v): Displacement / Time =∆x/t How far you have moved from the starting position vs. how much time you traveled Vector!

Distance’s link to time and speed

Moving through the classroom… Speed =d/t Velocity =∆x/t Distance (# of Blocks) Time (seconds)

Guided and Independent Practice: Understanding Velocity and graphs with practice problems from work packet

Graphing Velocity vs. time Miss K starts to move. From 5-10 sec, she moves at a velocity of 10 m/s. By 15 sec, she is moving at 40 m/s. She then slows down to 20 m/s in 10 seconds.

Area Under the Curve = Displacement

Slope = Acceleration

Questions to think/write about... Create and describe a plan to test changes in velocity by using a balloon-powered car Cheerleader Challenge: How could you test and calculate a flyer's velocity falling from a cradle?

Solving problems…

Last Items/ Questions Homework: Car plans and 1 velocity problem from packet Recommended to visit: http://sdsu-physics.org/physics180/physics195/Topics/chapter2.html Think about your progress and effort in Units 1 & 2 for Reflection/Celebration once grades are back