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2nd way to describe motion

B) Motion Plots

(A. K. A.  Motion Diagrams)

 

Position Vs Time Plot

Movement in a Straight line

Position
(m)
Time
(sec)
  0
  2
  4
  6
  8

 

 

Position
(m)
Time
(sec)
0 0
5 2
10 4
15 6
18.3 8

 

Motion Map

 

 

5m in 2 sec/5m in 2 sec/5m in 2 sec/3.3 m in 2 sec

 

 

 

Speed from 0 to 2 seconds?

Speed = Δd/Δt

 

= 5 m/2 sec

 

= 2.5 m/s

 

 

 

 

 

Speed from 2 to 4 seconds?

 

Speed = Dd/Dt

 

= 5 m/2 sec

 

= 2.5 m/s

 

 

 

 

Speed from 4 to 6 seconds?

 

Speed = Δd/Δt

 

= 5 m/2 sec

 

= 2.5 m/s

 

 

 

 

 

Does the object travel faster

or slower from 6 to 8 seconds?

 

 

Slower Speed
(smaller change in d
during same time)

 

 

 

Compare speed from 6 to 8 sec
with speed from 8 to 9 sec

 

 

Same Speed, Same Slope

 

 

 

What kind of motion
 produced this plot?

 

 

Increasing Speed

 

Motion Map

 

 

• Equations


 


Speed

 

 

 

 

 


 

Velocity

(speed and direction)

 


Direction

 

 

 

 

Displacement

 

 

 

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Established 1995
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