Describing Motion Around Us MCQs

Q1. Which of the following is a vector quantity?

• A.Displacement
• B.Distance
• C.Speed
• D.Time

Answer: A. Displacement

NCERT fact (physics, chapter 'Describing Motion Around Us'): Displacement has both magnitude and direction. Why option A fits - Correct. Distractor analysis: option B) 'Distance' misses the point - Distance is a scalar; option C) 'Speed' is incorrect: Speed is a scalar. Final answer - A) Displacement.

Q2. Which of the following is a scalar quantity?

• A.Speed
• B.Velocity
• C.Displacement
• D.Acceleration

Answer: A. Speed

Eliminate first - option B) 'Velocity' is wrong because A vector; option C) 'Displacement' is incorrect: A vector; option D) 'Acceleration' fails since A vector. That leaves only option A). Confirm with the chapter rule: Speed has only magnitude -> scalar (physics, chapter 'Describing Motion Around Us'). Answer: A) Speed.

Q3. Which quantity tells only how fast a body moves, not in which direction?

• A.speed
• B.velocity
• C.displacement
• D.acceleration

Answer: A. speed