# Kinematics Review Worksheet

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14 Νοε 2013 (πριν από 4 χρόνια και 7 μήνες)

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Kinematics Review Worksheet

The following questions will help you to review previous concepts in kinematics, a branch of
physics that deals with the study of objects in motion. It is expected and assumed that you are
comfortable with the following
concepts. If you are having some difficulty, please consult with
me as early as possible.

The page numbers and questions below refer to the Nelson 11 textbook, which will be made
available in electronic form for this course.

S
calar and Vector Quantities (p.6
, and p.12
)

1.

What is the difference between a scalar and a vector quantity?

2.

Provide two examples of a scalar quantity, and two examples of a vector quantity:

3.

Circle which measurements are scalar quantities:

a.

12ms

b.

3.2m[up]

c.

15cm

d.

500 MHz

e.

100 km/h [west]

f.

50 mL

Average Speed (p.7)

4.

Provide a word definition for average speed in YOUR OWN words.

5.

What
is the symbol definition for average speed? (i.e. the formula)

6.

Is average speed a scalar or vector quantity?

Why?

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7.

What are the different units that we typically use to measure average speed?

8.

Assume that the ironman marathon record is

4h 20min 15s. Determi
ne the average speed

9.

A rat in a maze travels 252 cm total from where it is released before finding the exit.

The
time it takes the rat to finish is 4 minutes.

Calculate the average speed of the electrons in

m/s.

A
verage
V
elocity

(p.
13
-
14)

10.

Provide a word definition for average velocity in YOUR OWN words.

11.

What is the symbol definition for average velocity? (i.e. the formula)

12.

Is average velocity a scalar or vector quantity? Why?

13.

What are the different units that we typically use to measure average
velocity
?

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14.

What is
the definition of displacement?

15.

How is displacement different from distance?

16.

If a dog, initially at a position 2
m
[South]

of its owner, runs to retrieve a stick that is
30
m
[North]

of its owner. What displacement does the dog need

in

in order to reach the stick?

17.

What is the dog’s final position in reference to the owner?

18.

W
hat is the difference between
average
speed and
aver
age
velocity?

19.

While running on h
is hands, an athlete sprinted 35
.0 m [fwd] in a record
12.5
s. Determine
the average velocity for this feat.

20.

At the snail racing championship in England, the winner m
oved at an average velocity of 3.8
mm/s [fwd] for 137

s. D
etermine the winning snail’s displacement
(in mm)
during this time
interval.

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21.

The women’s record for

the top windsurfing speed is 25
.8 m/s. Assuming that this speed
remains constant, how long would it t
ake the record holder to move 12
8 m [fwd]?

A
verage
A
c
celeration

(p.25
-
28)

22.

Provide a word definition for average
acceleration

23.

What is the symbol definition for average
acceleration
? (i.e. the formula)

24.

Is average
acceleration

a scalar or vector quantity? Why?

25.

What are the different units tha
t we typically use to measure average
ac
c
eleration
?

26.

A

soccer player

starting from rest and undergoing uniform acceleration reaches a velocity of
7.0 m/s [fwd
] in
6.2 s. Find the

average acceleration

of the soccer player
.

27.

Rewrite the equation
for average
acceleration

to solve for the following:

a.

Final velocity

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b.

Initial velocity

c.

T
ime interval

28.

A boy launches a toy rocket from his backyard. T
he rocket’s upw
ard velocity increased from
10
m/s to
100m/s, with an average accel
eration of
magnitude 4.1

m/s
2
. How
long
did the
acceleration last?

Graphing Uniform Motion (p.14
-
15)

29.

On the graph paper provided sketch a position
-
time graph for the following scenario:
assume that
Mr G, the fastest teacher at CIC, runs 11

m s
traight
South

each second for 12.0
s.
Hint, it may be
helpful to create a data table for the x

values
(time) and y

values
.

b.

Calculate the slope of the graph. What does this value represent?

30.

One another
section

of

the

graph paper, sketch a ve
locity
-
time graph for the same scenario

b.

C
al
culate the slope of this graph:

31.

Consider an object that starts from rest, and then accelerates West with an average
acceleration of
5.0 m/s
2
.

Draw the velocity
-
time graph on another sheet of graph paper.

b.

Calculate the area between the line and the x
-
axis

of this graph. What does this value
represent?