Class 9 Exam  >  Class 9 Questions  >  Which of the following is a correct measure o... Start Learning for Free
Which of the following is a correct measure of velocity?

  • a)
    30 s

  • b)
    30 m/s

  • c)
    30 South

  • d)
    30 m/s, South

Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following is a correct measure of velocity?a)30 sb)30 m/s...
Velocity is a vector quantity, which means it has both magnitude and direction. To correctly measure and describe velocity, you need both these components.


Here’s the analysis of the provided options:




  1. 30 s: This is a measure of time, not velocity.



  2. 30 m/s: This is a measure of speed, not velocity, because it does not include a direction.



  3. 30 South: This describes a direction but lacks the magnitude (speed), so it is not a complete measure of velocity.



  4. 30 m/s, South: This provides both magnitude (30 m/s) and direction (South), making it a complete measure of velocity.




So, the correct measure of velocity is:


4. 30 m/s, South
View all questions of this test
Most Upvoted Answer
Which of the following is a correct measure of velocity?a)30 sb)30 m/s...
**Explanation:**

Velocity is a measure of the rate at which an object changes its position. It is a vector quantity, which means it has both magnitude and direction. The magnitude of velocity is the speed of the object, and the direction indicates the direction of motion.

**Options:**

a) 30 s: This is a measure of time, not velocity. The unit "s" represents seconds, which is a unit of time.

b) 30 m/s: This is the correct measure of velocity. The unit "m/s" represents meters per second, which is a measure of speed in a specific direction.

c) 30 South: This is not a valid measure of velocity. "South" represents a direction, but it does not provide information about the magnitude or speed of the object.

d) 30 m/s, South: This is the correct measure of velocity. It includes both the magnitude (30 m/s) and the direction (South). The unit "m/s" represents speed, and the word "South" indicates the direction of motion.

**Conclusion:**

The correct measure of velocity is option 'D' - 30 m/s, South. This measure includes both the magnitude (speed) and the direction of the object's motion.
Free Test
Community Answer
Which of the following is a correct measure of velocity?a)30 sb)30 m/s...
D is the right answer because velocity is a vector which means we should mention both the magnitude nd direction soooo option d is the right answer
Explore Courses for Class 9 exam

Top Courses for Class 9

Question Description
Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following is a correct measure of velocity?a)30 sb)30 m/sc)30 Southd)30 m/s, SouthCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests.
Explore Courses for Class 9 exam

Top Courses for Class 9

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev