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Velocity and Acceleration Velocity and Acceleration

Velocity and Acceleration - PowerPoint Presentation

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Uploaded On 2018-01-23

Velocity and Acceleration - PPT Presentation

Average speed Speed is a scalar variable Unit length over time ms Instantaneous velocity Speed and direction of object at a particular instant in time Velocity is a vector ID: 626175

time velocity avg buggy velocity time buggy avg buggies acceleration speed step average scenario determine distance graphs tumble vector magnitude meter group

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Slide1

Velocity and AccelerationSlide2

Average speed

Speed is a

scalar variable Unit = length over time (m/s)Slide3

Instantaneous velocity

Speed and direction of object at a particular instant in time

Velocity is a vector variableSlide4

Average velocity

v

avg = ∆ d = displacement t time interval Slide5

Average velocity

Another formula for average velocity

Unit = length over time (m/s)Slide6

acceleration

Definition -

Rate at which velocity changesAcceleration is a vector Slide7

acceleration

aavg = ∆v/t ∆v: change in velocity ∆t: change in time

(time interval)∆v =

v

f

– v

i Slide8

SCALAR

(Magnitude)

DistanceSpeedVECTOR(Magnitude & direction)PositionDisplacement

VelocityAccelerationSlide9

Speed and Velocity

Video

https://www.youtube.com/watch?v=DRb5PSxJerM https://www.youtube.com/watch?v=-6lrr6-ADY0 Slide10

Tumble Buggies Minilab

Step 1:

Get a buggy, whiteboard, meter stick, and marker. Write down buggy color and letter on your white board.Step 2: Using your phone as a timer and a meter stick to measure distance, collect 7-10 distance vs. time data points (i.e. distance travelled in 1s, 2s, 3s, etc.), create a data

table, and graph distance vs. time by plotting the points on your white board.Step 3: Use the slope of your plotted line to determine the velocity of your buggy.Slide11

Tumble Buggies, cont

.

Step 4: Join another group that has a different color buggy.Scenario 1: Using the two graphs each group created, determine where and when the blue buggy will catch up to the red buggy if the red buggy starts 3m ahead of the blue one.Test your prediction.Slide12

Tumble Buggies, cont

.

Scenario 2: Using your graphs, determine where and when the two buggies will collide if they start 5 m apart facing each other.Scenario 3: Compare graphs as a class and determine which two buggies are the fastest. Which are the slowest?Scenario 4: Class pick!Slide13

v

avg

= d tvavg t = d t = d vavgSlide14

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