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Indian Navy AA (Artificer Apprentice) C9kineticenergy — practice questions

Explore 28 free C9kineticenergy questions in Indian Navy AA (Artificer Apprentice) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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C9kineticenergy questions and exercises with answers

Showing questions 1–28 of 28.

Work done by a constant force $\vec{F}$ when the body moves through displacement $\vec{s}$ is:Read the answer and worked solution →As per your syllabus, the dimensions of POTENTIAL energy are the same as those of which quantity?Read the answer and worked solution →As per your syllabus, the SI unit of the spring constant k is which?Read the answer and worked solution →As per your syllabus, the unit kilowatt-hour (kWh) measures which physical quantity?Read the answer and worked solution →CLASS10 · Physics · Magnetic Effect — Quick True/FalseRead 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

Work done by a constant force $\vec{F}$ when the body moves through displacement $\vec{s}$ is:

  1. $W = F + s$
  2. $W = F s \cos\theta$
  3. $W = F s \sin\theta$
  4. $W = F / s$
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Correct answer: B. $W = F s \cos\theta$

Work is defined as $W = \vec{F} \cdot \vec{s} = F s \cos\theta$, where $\theta$ is the angle between $\vec{F}$ and $\vec{s}$. Work is maximum ($Fs$) when force and displacement are parallel and zero when they are perpendicular ($\cos 90° = 0$). Negative work happens when force opposes motion (e.g. friction).

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As per your syllabus, the dimensions of POTENTIAL energy are the same as those of which quantity?

  1. Force per unit area
  2. Momentum vector
  3. Power dissipated
  4. Work and kinetic energy
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Correct answer: D. Work and kinetic energy

Your syllabus: V has same dimensions as W and K: [M L² T⁻²]. Unit: joule.

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As per your syllabus, the SI unit of the spring constant k is which?

  1. J m⁻¹
  2. N m
  3. N s
  4. N m⁻¹
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Correct answer: D. N m⁻¹

Your syllabus: F = -kx ⇒ k = F/x has unit N/m. Dimensions [M T⁻²].

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