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Motion & Simple Machines 2
Test Description: Force, Newton's Laws of Motion & Simple Machines
Instructions: Answer all questions to get your test result.
1) The harder you pedal a bicycle, the faster it will go. What explains this?
A
Newton's 3rd law of motion
B
Newton's 2nd law of motion
C
law of conservation of energy
D
Newton's 1st law of motion
2) A hockey puck will slide across ice for a long time when hit. What explains this?
A
Newton's 2nd law of motion
B
law of conservation of energy
C
Newton's 3rd law of motion
D
Newton's 1st law of motion
3) The main reason a person can jump off the ground.
A
Newton's 2nd law of motion
B
law of conservation of energy
C
Newton's 1st law of motion
D
Newton's 3rd law of motion
4) Your front teeth are an example of this simple machine.
A
pulley
B
screw
C
lever
D
wedge
5) A cord on a widow blind is an example of this simple machine.
A
pulley
B
wedge
C
screw
D
lever
6) A sloped surface, sometimes called a ramp, that allows you to lift a heavy load using less force over a greater distance is a(n) ___.
A
wheel and axle
B
lever
C
inclined plane
D
wedge
7) The resistance of motion between two objects that are in contact with each other.
A
gravity
B
inertia
C
weight
D
friction
8) The more ____ an object has, the greater its inertia.
A
mass
B
length
C
height
D
width
9) ______ equals force times distance.
A
Friction
B
Mass
C
Inertia
D
Work
10) Which best relates the force exerted by the effort and the force exerted by the resistance in a 2nd class lever?
A
They act in opposite directions.
B
They both exert a force in the same direction on the fulcrum.
C
They are added together to produce a larger total force.
D
They precisely balsnce each other when the lever is in motion.
*select an answer for all questions
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