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Indian Navy SSR Newton's Laws of Motion — practice questions

Explore 13 free Newton's Laws of Motion questions in Indian Navy SSR Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Newton's Laws of Motion questions and exercises with answers

Showing questions 1–13 of 13.

In circular motion at radius r and speed v, the centripetal acceleration is:Read the answer and worked solution →True or false: what Aristotle got wrongRead the answer and worked solution →Complete Newton's first lawRead the answer and worked solution →Which law is this?Read the answer and worked solution →MomentumRead the answer and worked solution →True or false: inertia and forceRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every statement the first law licensesRead the answer and worked solution →Flip and pair: name with contributionRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the historical argumentRead the answer and worked solution →

Worked practice questions

In circular motion at radius r and speed v, the centripetal acceleration is:

  1. v/r
  2. v²/r
  3. r/v
  4. mv²
Show answer and solution

Correct answer: B. v²/r

a_centripetal = v²/r — directed toward the center. Alternatively, a = ω²r where ω is angular velocity. This is the acceleration required to keep the body on its circular path.

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True or false: what Aristotle got wrong

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Questions
  1. Statement is true
    No
    Statement
    A force is needed to keep a body in uniform motion.
  2. Statement is true
    Yes
    Statement
    In practice a force is needed to counter friction.
  3. Statement is true
    Yes
    Statement
    Aristotle's view on this was wrong.
  4. Statement is true
    Yes
    Statement
    With no external force, a moving body keeps moving.
  5. Statement is true
    Yes
    Statement
    Galileo's work on inclined planes led to the law of inertia.
The chapter opens by correcting this directly: a force is needed in practice only to counter friction, not to keep a body moving. Source: syllabus Physics, Ch 4 Laws of Motion.

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Complete Newton's first law

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Missing parts
  1. Answer
    uniform
    Choices
    1. uniform
    2. circular
    3. accelerated
  2. Answer
    external
    Choices
    1. external
    2. internal
    3. frictional
  3. Answer
    acceleration
    Choices
    1. acceleration
    2. velocity
    3. momentum
Complete the statement
Every body continues in its state of rest or of {0} motion in a straight line, unless compelled by some {1} force to act otherwise. Put simply, if the external force is zero then the {2} is zero.
The law as the chapter states it. Source: syllabus Physics, Ch 4 Laws of Motion.

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