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Review

 

II. Motion Diagrams - plots of motion data

 

Detailed, visual way
of describing motion

 

Both plots show an increasing displacement

Describe the velocity for each.





Constant Velocity



Increasing Velocity

 

 

A. Displacement vs. Time Plot

 

Ex)

(d) Displacement (m)


Calculate the Velocity
from 2 to 4 sec

  V = ∆d/∆t  

 

= (10. m - 5.0 m)/(4.0 s - 2.0 s)

 

= +2.5 m/s

 

 

(d) Displacement (m)

Velocity from 4 to  6 seconds?

 

 

 

 

 

= +2.5 m/s

 

 

 

(d) Displacement (m)

What is happening from 6 to 8 seconds? 

Motion Map

5 m in 2 sec / 5 m in 2sec / 5 m in 2 sec 

10 m backward in 2 sec

(d) Displacement (m)

 

Slope of a
d vs. t graph
 = velocity

 


Describe the various motions shown in this plot

A to B?

Constant Velocity

 

 

 

B to C?

 

 

Increasing V,
then Decreasing V

 

 

D?

 

 

 

Rest

 V = 0

 

 

 

D to E ?

 

 

 

Increasing V

 

 

 


Motion Diagrams II

 

 

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