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Which of the following quantities relating to motion is not a vector? Question 16Answera.Displacementb.Speedc.Velocityd.Acceleratione.All of these are vectors

Question

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Solution

Step 1: Break Down the Problem

We are tasked with identifying which of the listed quantities related to motion is not a vector. A vector quantity has both magnitude and direction, while a scalar quantity has only magnitude.

Step 2: Relevant Concepts

  1. Displacement - A vector quantity representing the change in position of an object.
  2. Speed - A scalar quantity that measures how fast an object is moving, regardless of direction.
  3. Velocity - A vector quantity that describes the rate of change of position, including direction.
  4. Acceleration - A vector quantity that represents the rate of change of velocity.

Step 3: Analysis and Detail

  • Displacement: Vector (has direction)
  • Speed: Scalar (no direction)
  • Velocity: Vector (has direction)
  • Acceleration: Vector (has direction)

Given the definitions, speed is the only quantity that lacks a direction, hence it is classified as a scalar.

Step 4: Verify and Summarize

All other options (displacement, velocity, acceleration) are vectors, whereas speed does not have directional information and is purely about the magnitude of how fast something is moving.

Final Answer

b. Speed is the quantity that is not a vector.

This problem has been solved

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