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21 questions
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- 1. Multiple Choice
Force is a ______ or ______ applied on an object.
push, pull
position , location
motion, rest
- 2. Multiple Choice
_____ is said to be done when force moves an object.
work
energy
motion
- 3. Multiple Choice
The ability or capacity to do work is called _____.
energy
force
work
- 4. Multiple ChoiceWork is done when a force causes an object to ...movestay stillslow down
- 5. Multiple Choice
In which scenario is work = 0 J ?
Pushing a stationary wall
Pulling a trolley car
Pushing a book across the table
Dropping a set of keys from a height, h.
- 6. Multiple Choice
If the force on an object is in the negative direction, the work it does on the object must be
zero
positive
nagative
The work could be either positive or negative, depending on the direction of the object's motion.
- 7. Multiple Choice
What is needed to calculate work?
force
distance
time
mass
- 8. Multiple Choice
Select all: Work is equal to...
KE + PE
Change in energy
mg
Fd
- 9. Multiple Choice
Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who did more work?
Bobby
Carol
They did the same amount of work
Not enough information
- 10. Multiple Choice
A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. Her power is:
320 W
400 W
500 W
2 000 W
- 11. Multiple ChoiceIs the amount of energy being transferred over a period of time.PowerEnergySecondsJoules
- 12. Multiple ChoiceWhat is the unit of measurement for power?JoulesWattsVoltageCalories
- 13. Multiple ChoiceWhich type of appliances transfer the most energy per second?Those that transfer energy into heat.Those that transfer energy into light.Those that transfer energy into sound.Those that transfer energy into movement.
- 14. Multiple ChoiceA kettle transfers 1000J of energy every 2 seconds. Calculate its power.2000 Watts1000 Watts500 Wattscannot be determined
- 15. Multiple Choice
Where does the pendulum have the greatest kinetic energy?
A
B
C
D
E
- 16. Multiple Choice
Where does the pendulum have the least amount of potential energy?
A
B
C
D
E
- 17. Multiple Choice
Where does the pendulum have the greatest potential energy? (pick 2)
A
B
C
D
E
- 18. Multiple Choice
Where does the pendulum stop moving for just a split second so that it's kinetic energy is zero? (pick 2)
A
B
C
D
E
- 19. Multiple Choice
What is the mechanical energy of the system? (ignore friction)
0J
10,000J
20,000J
can not be determined
- 20. Multiple Choice
What is included in mechanical energy?
Potential Energy
Kinetic Energy
Potential and Kinetic Energy
None of the options
- 21. Multiple Choice
What is the definition of mechanical energy?
Energy with an electrical charge
Energy due to the position or movement of something
Energy that is being carried by waves
Energy is the ability to do work
- Answer choicesTagsAnswer choicesTags