MP Board · Class 9 · Science · MotionA car accelerates uniformly from $18\text{ km/h}$ to $36\text{ km/h}$ in $5\text{ s}$. What is its acceleration?
Step-by-Step Solution
Initial velocity $u = 18\text{ km/h} = 5\text{ m/s}$\nFinal velocity $v = 36\text{ km/h} = 10\text{ m/s}$\nTime $t = 5\text{ s}$ $$a = \frac{v - u}{t} = \frac{10 - 5}{5} = 1\text{ m/s}^2$$
Detailed Options Breakdown
Option : $1\text{ m/s}^2$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 1: $2\text{ m/s}^2$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Motion.
Option 2: $0.5\text{ m/s}^2$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Motion.
Option 3: $3.6\text{ m/s}^2$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Motion.
💡 Study Guide: This question tests core syllabus concepts from Motion. For formulas, key summaries, and mock exam reference guides, read the full Motion Revision Notes.