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Class 9 Physics (India)

Course: Class 9 Physics (India) > Unit 4

Lesson 5: Power

Relating power and energy

Sonya climbs a ladder with power output P, start subscript, start text, S, end text, end subscript. Bob climbs the same ladder in twice the time with double the power output.

How does Bob’s total change in energy, delta, E, start subscript, start text, B, end text, end subscript, compare with Sonya’s, delta, E, start subscript, start text, S, end text, end subscript?

(Choice A)
Not enough information
(Choice B)
delta, E, start subscript, start text, B, end text, end subscript, equals, 4, delta, E, start subscript, start text, S, end text, end subscript
(Choice C)
delta, E, start subscript, start text, B, end text, end subscript, equals, delta, E, start subscript, start text, S, end text, end subscript
(Choice D)
delta, E, start subscript, start text, B, end text, end subscript, equals, 2, delta, E, start subscript, start text, S, end text, end subscript

Stuck?

Class 9 Physics (India)

Course: Class 9 Physics (India) > Unit 4

Problem