alleryStart learning →As per your syllabus, the KINETIC energy of a body of mass m moving with speed v is which?
- m v
- (1/2) m v
- m v²
- (1/2) m v²
Show answer and solution
Correct answer: D. (1/2) m v²
Your syllabus: K = (1/2) m v².
Scalar; always non-negative.
Indian Navy SSR Work, Energy and Power — practice questions
Explore 28 free Work, Energy and Power questions in Indian Navy SSR Physics. Open each question or exercise to read its content, reference answers and available explanation.
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As per your syllabus, the KINETIC energy of a body of mass m moving with speed v is which?Read the answer and worked solution →As per your syllabus, the zero of GRAVITATIONAL potential energy is conventionally chosen at which level?Read the answer and worked solution →As per your syllabus, an object dropped from height h, just before hitting the ground, has kinetic energy equal to which value?Read the answer and worked solution →As per your syllabus, the elastic potential energy stored in a spring extended by x is which?Read the answer and worked solution →As per your syllabus, during the collision interval itself, conservation of momentum holds at which moments?Read the answer and worked solution →Complete the work-energy theoremRead the answer and worked solution →True or false: conservative forcesRead the answer and worked solution →Conservative or not?Read the answer and worked solution →Reading the theoremRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Tap every test for a conservative forceRead the answer and worked solution →Order the reasoning: from work to speedRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →True or false: energy bookkeepingRead the answer and worked solution →Speeds up, slows down, or neither?Read the answer and worked solution →Applying the work-energy theoremRead the answer and worked solution →True or false: potential energyRead the answer and worked solution →Kinetic or potential?Read the answer and worked solution →Tap every statement true of a closed pathRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: energyRead the answer and worked solution →Complete the potential energy relationRead the answer and worked solution →Flip and pair: quantity with what it tracksRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Order the reasoning: why a pendulum keeps swingingRead the answer and worked solution →Conservative or not, in practiceRead the answer and worked solution →
Worked practice questions
As per your syllabus, the zero of GRAVITATIONAL potential energy is conventionally chosen at which level?
- The ground (reference)
- The launching height
- Infinity always
- The centre of Earth
Show answer and solution
Correct answer: A. The ground (reference)
syllabus Points 7: for mgh form, zero is taken at ground level.
PE is defined up to an additive constant.
As per your syllabus, an object dropped from height h, just before hitting the ground, has kinetic energy equal to which value?
- (1/2) m g h
- 2 m g h
- m g h / 2
- m g h
Show answer and solution
Correct answer: D. m g h
Your syllabus: all gravitational PE = mgh has converted to KE on impact ⇒ K = mgh.
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