Rajasthan BoardEnglish MediumSTD 9ScienceMotion1 Mark
Question
If north is the positive direction, which situation involves positive velocity and negative acceleration:
✓
Answer
A car slowing down as it moves northward
Explanation:
The rate of change of velocity with respect to time is known as acceleration.
Negative acceleration means a decrease in velocity with respect to time.
If a car is moving northward and slowing down, the displacement will be along the north (positive), so the velocity will be positive until it gets stopped.
As the car is slowing down, the acceleration will be negative.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.