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# Motion Graphs

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

by

Tweet## Andrew Lanning

on 4 May 2010#### 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

Full transcriptDifference 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