Physics Work & Energy SZABMU 2022
PMDC Verified Question 42 of 108
The unit of kinetic energy is same as that of:
A
Work
B
Power/Time
C
Time/Power
D
Work/Time
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Work
Concept:

By the Work-Energy Theorem, work done on an object equals its change in kinetic energy. They represent the exact same physical dimension.

Formula:

$$ \Delta K.E = W $$

Solution:

  • Work is measured in Joules (J).


  • Kinetic Energy is measured in Joules (J).


  • Therefore, they have identical units.


Why other options are incorrect:

Work/Time is Power (Watts). Power/Time gives Watt/second, which is meaningless here.

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