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WorksheetsEnergy, Work, Power (CIE AS Physics)
Total questions: 18
Worksheet time: 34mins
What is the equation for work?
Ep= mgh
W = F x d
F = mg
F = ma
Bob (80 kg) uses 180 N of force to get him up the slope. The vertical distance is 2 m and the diagonal is 10 m. Calculate the work he does.
1600 J
160 J
3600 J
1800 J
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
During the Powerhouse lab, Jerome runs up the stairs, elevating his 102 kg body a vertical distance of 2.29 meters in a time of 1.32 seconds at a constant speed. Determine the power generated by Jerome.
1.73 x 103 W
1.48 x 103 W
1.91 x 103 W
1.27 x 103 W
The Taipei 101 in Taiwan is a 1667-foot tall, 101-story skyscraper. The skyscraper is the home of the world’s fastest elevator. The elevators transport visitors from the ground floor to the Observation Deck on the 89th floor at speeds up to 16.8 m/s. Determine the power delivered by the motor to lift the 10 passengers at this speed. The combined mass of the passengers and cabin is 1250 kg.
2.06 x 105 W
6.19 x 106 W
2.10 x 104 W
3.45 x 105 W
The area under a force vs. displacement graph tells you the
mass of the object
momentum of the object
work done on the object
impulse of the object
Which equations do you need to be able to derive?
Work done
GPE
KE
Efficiency
Tick all the parts that should be written if asked to define "work done"
Force
Displacement in direction of force
Time
Distance moved
Define power
Watt are you talking about
Work done per unit time
Total energy transferred
Work done x time
Mike and Ian move 50 m on a snow lift which uses 750 N of force to move them in 75 seconds. Calculate the power of the lift.
750 W
500 W
7500 W
2812500 W
