Name: ________________________ Class: ___________________ Date: __________
ID: A
Exam 1--PHYS 101--07F
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. What is the result, with proper significant figures, of this calculation:
1.1+2.2+3.40+0.02+1
____
____
a. 9
c. 9.0
b. 8.7
d. 8.72
2. Which of these is the standard for measurement of the meter?
a. a fraction of the Earth’s orbit around the c. the distance that light travels in a
Sun
particular amount of time
b. a multiple of the oscillation length for the d. a bar in France
cesium atom
3. What is the result of this calculation:
(9.2*10.3)/3.50
____
____
a. 27.07
c. 27.074
b. 27.1
d. 27
4. A climber ascends a mountain peak that has a vertical height of 1100 m. The slope of the mountain is 21 °
from the horizontal. Assume the slope of the mountain is smooth; what is the distance that the mountain
climber traveled?
a. 390 m
c. 1200 m
b. 3100 m
d. 2900 m
5. Which of these is the proper solution, in decimal notation and with proper significant figures, of this
calculation?
(1.0 × 10−3 )(3.25 × 102 )
3.4 × 10 5
a.
b.
0.000009559
0.00000096
= 9.5588 × 10 −7
c.
d.
1
0.000000096
95,600,000
Name: ________________________
____
6. Which of these equations is dimensionally correct? (x is distance, m is mass, a is acceleration, v is velocity, t
is time)
xma
1
c. mv =
a. x = x ° + at + 2 vt 2
t
b.
____
ID: A
xma =
3 2
mv
4
d.
t = 2π
x
v
7. If the acceleration of an object, a, is related to the displacement, x, according to the relation a=Bx, what are
the units for the constant B?
____
8.
____
9.
____ 10.
____ 11.
a. 1/s
c. s2/m
-2
d. m/s2
b. s
A crate has dimensions of 11m by 12m by 3.0 m. If 1m=3.28 ft, what is the crate’s volume in cubic feet?
c. 4300 ft3
a. 400 ft3
b. 14000 ft3
d. 1300 ft3
The SI system uses which of these for its units of basic quantities mass, length, and time
a. kilogram, meter, second
c. gram, meter, second
b. kilogram, centimeter, second
d. gram, centimeter, second
Convert 100 cg to kg. (100 cg = ?? kg)
a. 1 kg
c. 0.1 kg
b. 0.001 kg
d. 0.01 kg
In square centimeters, what is the area of your desktop?
a.
b.
10 cm2
10000 cm2
c.
d.
2
1000 cm2
100 cm2
Name: ________________________
ID: A
____ 12. Consider this triangle.
If a=20 cm and b=15 cm, what is the angle θ?
c. 41°
a. 37°
b. 53°
d. 49°
____ 13. For the triangle in the previous question, what is the length of side c?
a. 25 cm
c. 6 cm
b. 625 cm
d. 35 cm
____ 14. Your hair grows at a rate of 1/32 inch per day. Express this rate of growth in micrometers per seconds
(µm/s). (1 inch=0.0254 m)
a. 0.0092 µm/s
d. 0.092 µm/s
e. 0.00092 µm/s
b. 9.2 µm/s
c. 0.92 µm/s
____ 15. Describe the motion of the particle shown in this graph
a.
b.
c.
constant, negative velocity
increasing velocity
decreasing, positive velocity
d.
e.
3
decreasing, negative velocity
zero velocity
Name: ________________________
ID: A
____ 16. This graph shows the motion for a particle. What is the particle’s instantaneous acceleration at t=20s?
a. 2 m/s2
c. 13 m/s2
b. 0.5 m/s2
d. 25 m/s
____ 17. In the graph for the previous question, what is the average acceleration for the time interval between 0 and
100 s?
a. 0 m/s2
c. 0.15 m/s2
2
b. -1 m/s
d. -0.15 m/s2
____ 18. You throw a stone straight up into the air. The stone rises to its maximum height of 5.1 m in 1 second. With
what initial velocity did you throw the stone?
a. -9.8 m/s
d. 0 m/s
b. 10 m/s
e. 9 m/s
c. 5 m/s
____ 19. You push a toy car horizontally with an initial velocity of 5.0 m/s. If the car decelerates at a rate of 1.0 m/s 2,
how much distance will the car cover before coming to rest?
a. 13 m
c. 51 m
b. 38 m
d. 5 m
____ 20. If the speed of an object is zero, does its acceleration have to be zero?
a. No
c. Not enough information
b. Yes
4
Name: ________________________
ID: A
____ 21. When throwing a ball straight up, which of the following is true about its velocity and acceleration at the
highest point in its path?
d. both v≠0 and a≠0
a. v=0, but a≠0
b. v=0 and a=0
e. not enough information
c. v≠0, but a=0
____ 22. You drop a rock off of a bridge. After the first rock has dropped 4 m, you drop a second rock. What happens
to the distance between the two rocks as they fall?
a. increases
c. decreases
b. stays the same
d. not enough information
____ 23. You drop a bouncy ball on the floor, and it bounces back up to your hand. Which of these plots best
describes the motion of the ball from the moment you release it to the moment you catch it?
a.
c.
b.
d.
____ 24. A car accelerates from 10 m/s to 25 m/s in 5 seconds. What is the car’s acceleration?
a. 7 m/s2
c. 2 m/s2
b. 3 m/s2
d. 5 m/s2
5
Name: ________________________
ID: A
____ 25. You are on a planet where the acceleration due to gravity is 100 m/s 2. You throw a ball upwards at an initial
velocity of 5.0 m/s. The ball is in the air for 0.10 seconds. What is the velocity of the ball just before it
returns to your hand?
a. 50 m/s
c. 20 m/s
b. 15 m/s
d. 5 m/s
____ 26. A runner circles a 400 m track in 60 seconds. What is her average velocity?
a. 7 m/s
c. 0 m/s
b. 20000 m/s
d. not enough information
____ 27. The correct answer to this question is “C.” Please bubble C for question #27 on your Scantron.
a. A
c. C
b. B
d. D
6
ID: A
Exam 1--PHYS 101--07F
Answer Section
MULTIPLE CHOICE
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