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Motion & Simple Machines 1
Test Description: Force, Newton's laws of motion & simple machines
Instructions: Answer all questions to get your test result.
1) A person in a head-on collision who is not wearing a seat belt continues to move forward at the original speed of the car because of ____.
A
inertia
B
gravity
C
weight
D
friction
2) Newton\'s 1st law of motion states that an object stays at rest unless a(n) ___ acts on it.
A
balanced force
B
outside force
C
strong force
D
gravitational force
3) Which one of the following objects has the greatest inertia?
A
baseball
B
pencil
C
toothpick
D
bowling ball
4) A force is which one of these?
A
a push or a pull
B
none of these
C
a push
D
a pull
5) Force is measured in which units?
A
kilograms
B
meters
C
degrees
D
newtons
6) ____ is done only when an object moves in the direction of the applied force.
A
Work
B
Friction
C
Effort
D
Inertia
7) A force is exerted on a box and an equal and opposite force is exerted by the box. What explains this?
A
Newton's 3rd law of motion
B
law of conservation of energy
C
Newton's 2nd law of motion
D
Newton's 1st law of motion
8) A(n) ___ is a rod or plank that pivots about a fixed point.
A
wedge
B
lever
C
pulley
D
axle
9) John is pushing a table forward. Erin pushes the table in the opposite direction and the table stops moving. What amount of force is Erin pushing the table with?
A
the same amount of force as John
B
a greater amount of force than John
C
a lesser amount of force than John
D
double the amount of force as John
10) According to Newton\'s second law of motion, ____.
A
acceleration = mass / net Force
B
acceleration = net Force / mass
C
acceleration = speed x mass
D
acceleration = mass x net Force x speed
*select an answer for all questions
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