Physics For Poets
June 6, 2002
Mail #
Instructions:
This test is divided into two parts. Part A is entitled short answer questions
where you are to pick the best word, phrase or choice of answers which
best answers or, in some cases, defines the statement. Part B is entitled
longer answer questions. Make your answers clear and concise. If you need
more room turn over the test paper and continue on the back, but please
write "over" on the test. For problems, it is the procedure
that will be checked, not only the answer so please try to make it clear.
Be sure to include units in answering problems (such as we've done in class).
Point weighing is indicated in parentheses. So for this, the first test
of the summer poets' course, Good Luck!
A. Short Answer Questions
1. (6) Choose from the physical quantities
which we have discussed - length, area, volume, time, mass, speed, acceleration,
and force to answer the following:
a)
"How long" something is can be given by its ? .
b)
The amount of space occupied by an object is a 3 dimensional measurement
called ? .
c)
The quantity of "matter" contained by an object is called ? .
d)
A measure of how much an object speeds up is called ? .
e)
A measure of how fast an object is moving is given by the ? .
f)
Weight is a ? .
2. (12) Choose from the list of physical
quantities listed in question 1 to identify the quantities listed below
taken from various problems.
a)
6.3 ft
e) 9.8 ft3
I) 3.9 slug
b)
5.2 N
f) 2.75 (ft/sec)/sec
j) 2.7 lb
c)
2.92 kg m/s2
g) 4.7 square meters
k) 2.77 ft2
d)
3.62 s
h) 3.62 m/sec2
l) 2.25 H
3. (3) Write the following in Scientific
Notation.
a)
.00000902 kg
b)
25,100,000,000 miles
c)
.5002 m
4. (3) Write the following in ordinary
notation.
a)
3.21 x 10-4 m
b)
5.21 x 104 m
c)
7.002 x 10-1 kg
Physics 1130 - Test 1 - page 2
5. (2) A box measuring 2 m by 0.5 m by 4 m contains ? m3 and also
contains ? cm3.
(a) 6. (2) Find the net force for
(b)
each of the following:
7.
(2) There are ? m
in 1 km.
8.
(3) At an average speed of 88 ft/s, how far will a motorist travel in 1
min?
9.
(3) The distance from Minneapolis to Chicago is about 400 mi. How long
will this trip take if you average 50 mi/hr?
10.
(2) If you're traveling at 60 mi/H and look to the side for 2 s, how many
feet are traveled during this inattentive period? (Note: 88 ft/s = 60 mi
/H)
11. (2) Fill in the blanks: (a) ? in2 = 3 ft2
(b) ? in3
= 2 ft3
12.
(2) Note the prefix Mega "M": 5 Ms = ? s.
13.
(2) An object speeds up from rest to 60 m/s in 5 s. Its acceleration is ? .
(Be sure to include units.)
14.
(2) There are ? cubic
mm in one cubic m.
15.
(3) If 1.6 km = 1 mi, how far away in mi is 80 km?
16.
(3) If cotton cost $5 per square ft, the cost of a 2 yd wide by 6 yd long
piece of cotton is ? .
(Note: 3 ft = 1 yd.)
17.
(2) 720 square in equals ? square
ft.
18.
(1 ½) A famous scientist known as the "father" of experimental science
is ? .
19.
(1 ½) A famous scientist who underwent a trial to give up his "heretical"
beliefs contained in a book that he wrote which contained results of his
astronomical findings from his newly invented telescope.
20.
(1 ½) A famous scientist who is given credit for discovery and development
of the calculus, but who was a very paranoid, non-sociable individual.
21.
(1 ½) A famous scientist who discovered the "Universal" Law of Gravitation
and formalized three major laws of motion.
22.
(1) If an object is moving at a constant speed (with no
increase or decrease in that speed, then the acceleration of that object
is ? .
B. Longer Answer Questions
1. (2) If an object travels at constant
speed, does it also have a constant velocity? Explain.
Physics 1130 - Test 1 - page 3
2. (4) A car travels a distance of 100
ft in 5 sec.
(a) Find the average speed of the car:
(b) Find the distance traveled:
(i) After 1 sec:
(ii) After 2 sec:
(iii) After 4 sec:
3. (4) A dragster speeds up from rest
to 100 ft/s in 5 s.
(a) What is the acceleration of the car?
(b) Find the speed of the car
(i) After 1 s:
(ii) After 2 s:
(iii) After 4 s:
4. (3) Discuss the significance of Galileo's
famous "Tower of Pisa" experiment. How did the results of this experiment
compare to the ideas of the Greeks?
5. (6) Convert 30 mi/H to cm/s. A string of conversion factors or a fraction is quite satisfactory; you need not multiply out the numbers to get full credit.
NOTE: 12 in = 1 ft
60 sec = 1 min
60 min = 1 H
5280 ft = 1 mi
1 mi = 1.6 km
2.54 cm = 1 in
Physics 1130 - Test 1 - page 4
6. An object is given an initial velocity
of 192 ft per sec straight up into the air at t = 0 sec. Use the acceleration
due to gravity as 32 ft/sec2
or 9.8 m/sec2 . Neglect
air friction.
(a) Find its velocity at the following
times:
(1)(i)
t = 1 sec
(1)(ii)
t = 3 sec
(1)(iii)
t = 5 sec
(1)(iv)
t = 7 sec
(b)(1) How long does the object take to
return to the thrower's hand?
(c)(2) How high did the object go?
(d)(1) The acceleration at the top of
the path is what?
7. (4) State Newton's First Law and give
an example of each case mentioned in the first law.
8. (4) State and give two examples of
Newton's Second Law
9. (4) (a) An object accelerates from
rest to 20 m/s in 5 s. Find the acceleration.
(b) If the mass of the object is 100 kg, find the net force necessary to give it the acceleration of part (a)