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Worksheets5. Laws of motion
Total questions: 20
Worksheet time: 14mins
Name
Class
Date
1.
Newton’s first law of motion is also called the law of ________?
a)
Mass
b)
Inertia
c)
Force
d)
Velocity
2.
How long will an object remain at rest, according to Newton's First Law of Motion?
a)
it can't rest
b)
until noon
c)
until an unbalanced force occurs
d)
as long as there are unbalanced forces acting on it
3.
For every _______ there is an equal and opposite ________.
a)
reaction, action
b)
action, action
c)
reaction, reaction
d)
action, reaction
4.
You are sitting in a car that isn't moving; the car accelerates. Your body is pushed back. Explain.
a)
newtons
b)
vector
c)
inertia
d)
gravity
5.
When a person jumps horizontally off the end of a boat, the person goes forward and the boat goes backward. This is an example of
a)
inertia
b)
action and reaction
c)
Newton's 1st law
d)
Newton's 2nd law
6.
What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
7.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
8.
The force that acts in the opposite direction of motion when two surfaces come in contact.
a)
Force
b)
Friction
c)
Static
d)
Kinetic
9.
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
10.
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
11.
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
12.
What are the units on the coefficient of friction?
a)
none
b)
Newtons
c)
meters
d)
kilograms
13.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
14.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
15.
Normal force is
a)
Always opposite the weight
b)
Always parallel and down the incline
c)
Always perpendicular to the surface
d)
It depends on the direction of motion
16.
What are the 2 types of friction discussed in the book?
a)
Static and Dynamic Friction
b)
Kinetic and Static Friction
c)
Kinetic and Dynamic Friction
d)
Dynamic and Moving Friction
17.
Which of the following is NOT an example of friction?
a)
using the brakes on your bike to slow you down
b)
putting your hand out the window
c)
a satellite traveling through deep space
d)
a hockey puck going across an ice rink
18.
Which of the following statements is false?
a)
Friction can only slow things down
b)
Friction is never useful
c)
Friction can stop things from moving
19.
Only solids can produce friction
a)
true
b)
false
20.
What is acceleration?
a)
transfer of energy to an object
b)
going faster
c)
a change in velocity (speed, direction, or both)
d)
an object remaining in motion or at rest until something changes it
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