Section 4.2
Using Newton's Laws
Practice Test
1.
The force exerted by a spring scale is called __________.
a.
terminal velocity
b.
kinetic friction
c.
the apparent weight
d.
the kinetic force
Hint
2.
The weight force is defined as __________.
a.
F
g
=
m
a
b.
c.
F
g
=
m
g
d.
F
w
=
m
+
g
Hint
3.
On Earth, a scale shows that you weigh 490 N. What is your mass?
a.
75 kg
b.
50 kg to 5.0×10
1
kg
c.
22 kg
d.
100 kg
Hint
4.
How do you calculate your weight in newtons?
a.
(9.80 m/s
2
)sin
θ
b.
(9.80 m/s
2
)(
m
)
c.
2π(
m
)
d.
Hint
5.
The force exerted by a fluid on an object moving through the fluid is called the __________.
a.
terminal velocity
b.
apparent weight
c.
drag force
d.
net force
Hint
6.
Which of the following statements is true?
a.
Weight can change when acceleration due to gravity changes.
b.
Weight is a measure of inertia.
c.
Weight is the measure of the amount of matter in an object.
d.
Mass is a force.
Hint
7.
If standing on a scale in an elevator, as in Figure 4-9, and the scale reads 120% of your weight, what is the acceleration of the elevator?
a.
0.8
g
, up
b.
1.2
g
, down
c.
0.2
g
, down
d.
0.2
g
, up
Hint
