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WorksheetsMotion Friction
Total questions: 13
Worksheet time: 42mins
Name
Class
Date
1.
What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
2.
What does friction release?
a)
light
b)
sound
c)
heat
d)
gravity
3.
The force that acts in the opposite direction of motion when two surfaces come in contact.
a)
Force
b)
Friction
c)
Static
d)
Kinetic
4.
What direction does friction act relative to motion?
a)
in the same direction
b)
in the opposite direction
c)
need more information
d)
depends on the force
5.
What is the force of friction between a block of ice that weighs 950 N and the ground if μ = .12?
a)
65 N
b)
226 N
c)
175 N
d)
114 N
6.
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N?
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
7.
A box takes 40 N to start moving when the coefficient of static friction is .54. What is the weight of the box?
a)
81 N
b)
18 N
c)
98 N
d)
74 N
8.
What are the units on the coefficient of friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
9.
What are the units on the force due to friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
10.
What is the formula for the coefficient of friction?
a)
F friction / F normal
b)
F normal / F friction
c)
F weight / F friction
d)
F = ma
11.
What is the normal force?
a)
The force opposite an object's weight.
b)
The force that keeps objects from sinking through surfaces.
c)
If weight is F of 1 on 2, the normal force is F of 2 on 1.
d)
All of these describe the normal force.
12.
If weight is the force of gravity pulling down on an object, what direction does the normal force act?
a)
Pushes up
b)
Forwards
c)
Backwards
d)
Left
13.
If an object's weight is 10N, what is its normal force?
a)
0.1 kg
b)
-10N
c)
10N * 10 m/s2
d)
10N / 10 m/s2
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