Representing Motion
Practice Test
1.
According to Figure 1-16, if a mass of 45.0 g were hung on the spring, how long would the spring be?
a.
576 cm
b.
46.1 cm
c.
3.6 cm
d.
17.3 cm
Hint
2.
The vector that represents the sum of two vectors is called the __________.
a.
displacement
b.
direction
c.
speed
d.
resultant
Hint
3.
The point at which a line crosses the
y
-axis is the __________.
a.
parallax
b.
slope
c.
rise
d.
y
-intercept
Hint
4.
In a position-time graph,
t represents __________.
a.
total distance
b.
time
c.
temperature
d.
telial
Hint
5.
On a position-time graph, rise = __________.
a.
Δ
s
b.
Δ
d
c.
Δ
v
d.
Δ
t
Hint
6.
In Figure 1-10, if a fourth student measured the spring's length to be 14.2 ± 0.2 cm, would this agree with any of the other students' measurements?
a.
Yes, it agrees with only student 1.
b.
Yes, it agrees with students 1 and 3.
c.
No.
d.
Yes, it agrees with all three students.
Hint
7.
__________ describes the degree of exactness in a measurement.
a.
Significance
b.
Precision
c.
Accuracy
d.
Parallax
Hint
8.
The length of the position vector on a motion diagram is proportional to the __________.
a.
average speed
b.
velocity
c.
distance of the object from the intercept
d.
distance of the object from the origin
Hint
9.
The SI base unit of length is the __________.
a.
meter
b.
mole
c.
candela
d.
kilogram
Hint
10.
The magnitude of velocity is __________.
a.
direction
b.
distance
c.
acceleration
d.
speed
Hint
11.
A bicycle rider travels 15 km in 1.25 hours. What is the rider's average speed?
a.
10.5 km/h
b.
22.5 km/h
c.
13.75 km/h
d.
12 km/h
Hint
12.
In Figure 1-4, if the operation were changed to 3.90 divided by 7.2, what would the answer be with the correct number of significant digits?
a.
0.54
b.
0.5417
c.
1
d.
0.542
Hint
13.
A quantity that tells you only the magnitude is called a __________ quantity.
a.
interval
b.
scalar
c.
displacement
d.
vector
Hint
14.
If you travel 1.7 km north from your house at noon, and at 6:00 PM you travel 5.4 km south, what is your displacement?
a.
7.10 km south
b.
3.7 km south
c.
7.10 km north
d.
3.7 km
Hint
