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WorksheetsWork and Power
Total questions: 20
Worksheet time: 22mins
How much work is being done with 200 N of force over 426 metres ?
85,200 J
45,620 J
90,480 J
62,329 J
If 150 Joules of work is needed to move a box 10 metres, what force was used?
1500 N
15 N
1.5 N
150 N
Which of the following is the best example of work being done.
doing homework
lifting a box
pushing a stationary box
holding a box
You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?
Yes, work was done
No, work wasn't done
What would 54N be an example of?
work
power
distance
force
What is an example of a force?
Energy
Power
Pressure
Weight
If you increase your work and decrease your time, you will have
more power
less power
same amount of power
power rating can not be determined
Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power.
Person A
Person B
Which of these items is not part of the law of conservation of energy?
energy cannot be created
energy cannot be destroyed
energy can be transferred between forms
energy is destroyed by friction
A construction worker uses a pulley and a rope to raise an 85 kg person to a height of 2 m in 6 s. How much did he do?
1,670 J
833 J
278 J
417 J
Two people are lifting the same weight as shown in the animation. If they both do 10 reps, who will supply the most power?
Bro A
Bro B
They both will do the same work
Can't tell without knowing the weight they are lifting
