📝 Acceleration In Rectilinear Motion

Q1. A train accelerates uniformly from rest to \(25\ \text{m/s}\) in \(10\ \text{s}\). What is its average acceleration?

💡 Difficulty: easy | ✅ Correct: A

Q2. A car moves with velocity \(v(t)=5t^2-3t+2\) (m/s). What is its acceleration at \(t=2\ \text{s}\)?

💡 Difficulty: medium | ✅ Correct: B

Q3. A train accelerates from rest with a time‑dependent acceleration \(a(t)=2t\) (m/s\(^2\)). What distance does it travel in the first \(3\ \text{s}\)?

💡 Difficulty: hard | ✅ Correct: B