Kinematics The science of describing the motion of objects using words, numbers, diagrams, graphs, and equations.

brontidegrrrMechanics

Nov 14, 2013 (3 years and 7 months ago)

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Chapter 2 Lesson 1 “Distance and Displaceme
nt”

Lee


Kinematics



The science of describing the motion of objects using
words, numbers, diagrams, graphs, and equations.


The mathematical quantities which are used to describe the motion of objects can
be divided into two categories.



Scalars

are quantities wh
ich are fully described by a magnitude (or
numerical value) alone.



Vectors

are quantities which are fully described by both a magnitude and a
direction.

I.

Distance and Displacement



Distance

is a
scal
ar quantity

which refers to "how much ground an object has
covered" during its motion.



Displacement

is a
vector quantity

which refers to "how far out

of place an
object is"; it is the object's overall change in position.





1.

What is the distance and displacement of the skier from position A to B?

2.

What is the distance and displacement of the skier from position B to C?

3.

What is the distance and displacement of the skier from position c to D?


1. Distance = 180 m



Displacemnt = 180 m (right)

2. Distance = 140 m



Displacement = 40 m (right)

3. Distan
ce = 100 m



Displacement = 140m (right)


4.
Total Distance = 420 m

Total Displacement = 140 m (right)


Chapter 2 Lesson 1 “Distance and Displaceme
nt”

Lee



4.

What is the distance and displacement of th
e coach from position A to B?


5.

What is the distance and displacement of the coach from position B to C?


6.

What is the distance and displacement of the coach from position C to D?