

Work and Energy Concepts
Interactive Video
•
Physics, Science, Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does Grace's physics teacher suggest she does no work while carrying paper up the stairs?
Because she is not using enough force.
Because she is not moving fast enough.
Because the force applied is not parallel to the displacement.
Because the mass of the paper changes.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What arrangement could Grace make to ensure she gets paid for her work?
Get paid for the number of trips made.
Get paid for the distance traveled up the stairs.
Get paid for the total displacement.
Get paid for the time spent working.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If two people of the same mass climb the same stairs, who does more work?
The person who climbs slower.
The person who weighs more.
Both do the same amount of work.
The person who climbs faster.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is power related to work and time?
Power is time divided by work.
Power is the square of work.
Power is work divided by time.
Power is work multiplied by time.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the work done to move a 15 kg refrigerator 8 meters vertically?
1.2 * 10^4 joules
1.8 * 10^4 joules
1.5 * 10^4 joules
2.0 * 10^4 joules
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When pulling a sled with a rope at an angle, what must be calculated to find the work done?
The horizontal component of the force.
The vertical component of the force.
The total force applied.
The angle of the rope.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much work does Mike do when pulling the sled?
1.80 * 10^4 joules
2.00 * 10^4 joules
1.50 * 10^4 joules
1.20 * 10^4 joules
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