Work, Power, Efficiency, Simple Machines, & MA
Quiz
•
Physics, Science
•
10th - 11th Grade
•
Medium
+9
Standards-aligned
Brian Crawford
Used 27+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Efficiency is a measure of how much of the work put into a machine is converted into useful output work. Why can efficiency never reach 100%?
acceleration
elasticity
friction
gravity
Tags
NGSS.MS-PS3-3
NGSS.MS-PS3-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An inclined plane wrapped around a rod forms this simple machine
lever
pulley
wedge
screw
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the amount of work done if you use a 100N force to push a 50kg box 5m across the kitchen floor.
250 J
500 J
5000 J
50,000J
Tags
NGSS.HS-PS2-1
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
If a machine exerts a force of 250 N on an object and no work is done, what must have occurred?
The machine has broken
The object has not moved
The object has gained momentum.
The object has moved, but then stopped
Tags
NGSS.HS-PS2-1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A man has an air conditioner he wants to load into the back of his truck. Instead of lifting the air conditioner and carrying it to the truck, he improvises a ramp. He takes a board that is 3.6 meters long and places one end of it in the back of his truck, 1.2 meters off the ground. He leaves the other end of the board on the ground. He places the air conditioner on a dolly and pushes them both up the ramp and into the truck. What is the mechanical advantage of the ramp?
3.0
2.5
4.32
4.8
Tags
NGSS.MS-ETS1-1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is evidence that work is being done?
A machine is used.
The man exerts a force.
A simple machine makes work easier.
The man exerts a force and moves the load.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the mechanical advantage of the block and tackle used to lift the bale of cotton?
1
2
3
4
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