Describing Motion Around Us — Class 9 Science NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 9 Science chapter "Describing Motion Around Us" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 9 Science chapter "Describing Motion Around Us" — 8 important questions with detailed answers for CBSE boa…
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Key Questions Covered:
- Define distance and displacement.
- A car travels 5 km east, then 3 km west. Find distance and displacement.
- Define speed and velocity.
- + 5 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| Define distance and displacement. | ✓ Solved |
| A car travels 5 km east, then 3 km west. Find distance an… | ✓ Solved |
| Define speed and velocity. | ✓ Solved |
Showing 3 of 8 questions
Q1: Define distance and displacement.
Distance is the total path length traveled by an object (scalar quantity, always positive).
Displacement is the straight-line distance between starting and ending positions with direction (vector quantity, can be positive or negative).
Q2: A car travels 5 km east, then 3 km west. Find distance and displacement.
Distance = 5 + 3 = 8 km
Displacement = 5 - 3 = 2 km (east)
Note: Distance is always ≥ magnitude of displacement.
Q3: Define speed and velocity.
Speed = total distance / total time (scalar, always positive)
Velocity = displacement / time with direction (vector)
Formula: v = s/t
Unit: m/s
Showing 3 of 8 questions. Visit the full page for complete solutions.