One-Dimensional
Kinematics
One Dimensional Kinematics
Objective:
Becoming familiar with
Kinematics. We will study terms
such as scalars, vectors, distance,
and displacement
Definitions:
 One-dimension:
straight line, to the left or
to the right, up or down, east or west, etc.
 Kinematics:
the study of motion using
words, numbers, graphs and equations
From the following which are scalars
and which are vectors?
(A)
5 meters
(B) 30 meters/second East
(C) 20 degrees Celsius
(D) 4000 calories
(E) -10 centimeters
Visual describing distance vs
displacement

https://vimeo.com/26479781

4:12 – 4:50
Concept Question
Can
you drive your car in such a way
that the distance it covers is (a)
greater than (b) equal to, or (c) less
than the magnitude of its
displacement?
In each case, give an example if your
answer is yes, explain why not if
your answer is no.
Exit Ticket
 What
was easy to understand?
 What
was confusing to understand?
 Any
suggestions?
DO NOW:
 Objective:
Discovering the difference
between speed and velocity
 You
walk .5mi East to your friends house,
then you walk .3 miles West to the park.
 What
is the distance you traveled?
 What is your displacement?
Average Speed Problem:
My
wife ran a marathon(26.2
miles) with a speed of 2.4
meters/second. How long did it
take her to run the marathon?
Average Speed Visual:

http://www.physicsclassroom.com/mmedia/kinema/trip.cfm
Need help with Dimensional Analysis:

https://www.khanacademy.org/math/algebra/introduction-to-algebra/unitsalgebra/v/dimensional-analysis-units-algebraically
Go
to www.khanacademy.org and
type in Dimensional Analysis (6
minute video)
Conceptual Checkpoint:
Average Velocity Problem:

__(Name)_ sprints _______ meters in __________
seconds. If he/she takes 50 seconds to walk back
to the starting line. If the “sprint direction” is
taken to be positive, what is:
A) The average sprint velocity?
 B) The average walking velocity?
 C) The average velocity for the complete trip?

DO NOW:
 It
was a dark and stormy night, when
suddenly you saw a flash of lightning.
3.5 seconds later you heard the
thunder. Given that the speed of sound
in air is about 340 m/s, how far away
was the lightening bolt?
DO NOW (Honors):
A
finch rides on the back of a Galapagos
tortoise, which walks at the stately pace
of 0.06 m/s. After 2.0 minutes the finch
tires of the tortoise’s slow pace, and takes
flight in the same direction for another
2.0 minutes at 12 m/s. What was the
average speed of the finch for the 4minute interval?
Visual of position vs. time graph

https://vimeo.com/26479781

7:00 – 9:20
Graph #1 (position vs. time)
Graph #2 (Position vs. time)
Average velocity vs Instantaneous Velocity
Instantaneous
Speed - the speed
at any given instant in time.
Average Speed - the average of all
instantaneous speeds; found
simply by a distance/time ratio.