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# Motion Graphs

Speed, velocity, distance-time graphs and velocity time graphs.
by

## Andrew Lanning

on 4 May 2010

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#### Transcript of Motion Graphs

Motion Graphs What we're learning about:
Difference between distance and displacement
Difference between speed and velocity
How to interpret position-time graphs. Definitions: Distance, d, is how far an object has travelled.

Displacement, s, describes the change
in an object's position, x.

Speed = ___

Velocity = ___ d t t s Track, WA Government, Retrieved from http://www.dsr.wa.gov.au/athleticstrackeventdimensions I run one lap around the 400m track.
a) What is the distance I ran?
b) What is the displacement after the lap?
c) What is the average speed of my lap
if I finish in 50 secs?
d) What is the average velocity? http://helheim/moodle/mod/resource/view.php?id=3530 t = 0 t = 3 t = 7 The diagram shows the position of an object in relation to the origin. a) What is the object's displacement at t = 3 & t = 7 from the starting point?
b) What was the object's average velocity during the first 3 & 7 seconds?
c) What distance did the object travel in total?
d) What was the object's average speed during the 7 seconds?
e) Which direction does it start in?
f) When & where does the object change direction?
g) What was the object's rate of change at t = 3 ? Change the diagram to a position-time graph! Position Time Practice:
Ex 12E, Page 594
Q 2, 3, 5a,c,d,
Q 6a,d, *7 Can be +ive or -ive
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