
Work andPower
Authored by Dalia Rodriguez
Science
8th - 9th Grade
NGSS covered
Used 11+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Normal Force: 200N
Friction: 50N
Applied force: 0.0N
Weight: 250N
Weight Perpendicular to the plane 200N
W II: 150N
A free body diagram of a brick on an inclined plane is shown below. What is the coefficient of friction, µ
?
0.125
1.25
0.25
0.5
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which wheel and axle would allow a load to be dragged with less force?
Wheel and axle A.
Wheel and axle B.
Both devices would require the same amount of force
Not enough information.
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A mechanic is trying to loosen a nut with a wrench, but it is stuck. What could the mechanic do to help loosen the nut?
Use a heavier wrench.
Use a lighter wrench.
Use a longer wrench.
Use a shorter wrench.
Tags
NGSS.MS-PS2-2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In a lever, what happens if you decrease the distance between the fulcrum and the load?
You have to decrease the length of the lever
You have to use more force to move the load
You can use less force to move the load
You have to increase the height of the fulcrum
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What defines a first-class lever?
The load is exactly centered between the fulcrum and the lever
The fulcrum is between the effort and the load
The effort is between the fulcrum and the lever
The effort is between the fulcrum and the load
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How is a class 3 lever different from class 1 and class 2 levers?
A class 3 lever makes the job easier, but decreases the movement of the load
A class 3 lever makes the job easier, but increases the movement of the load
A class 3 lever makes the job harder, but decreases the movement of the load
A class 3 lever makes the job harder, but increases the movement of the load
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A device that transmits or modifies force or motion
Tags
NGSS.MS-PS2-2
NGSS.MS-PS2-1
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