Representing Motion
Practice Test
1.
A motion diagram is a series of images of a moving object that records its position after __________.
a.
1/30 s
b.
an acceleration
c.
equal time intervals
d.
it comes to rest
Hint
2.
The vector that represents the sum of two vectors is called the __________.
a.
direction
b.
displacement
c.
resultant
d.
speed
Hint
3.
Which of the following statements is true?
a.
The magnitude of a vector is always a negative quantity.
b.
The direction of a vector is always a positive quantity.
c.
The magnitude of a vector is always a positive quantity.
d.
The magnitude of a vector can be either a positive or a negative quantity.
Hint
4.
You drive a car for 2.0 h at 60 km/h, then for another 3.0 h at 85 km/h. What is your average velocity?
a.
- 73 km/h
b.
75 km/h
2
c.
75 km/h
d.
73 km/h
Hint
5.
A common symbol for the time interval is __________.
a.
t
i
b.
t
f
c.
Δ
t
d.
Δ
v
Hint
6.
On a position-time graph, run = __________.
a.
Δ
t
b.
Δ
d
c.
Δ
a
d.
Δ
v
Hint
7.
In a position-time graph,
t represents __________.
a.
telial
b.
total distance
c.
temperature
d.
time
Hint
8.
You are at a friend's house who lives 10 km north of your house. You drive north from there at a constant speed of 35 mph toward the pizza shop and arrive there 10 minutes later to pick up your pizza. How far from your house are you?
a.
10 km
b.
31 km
c.
20 km
d.
20 m
Hint
