Class 11 Physics Chapter 2 Motion in a Straight Line – Revision Notes

Quick revision notes for Class 11 Physics Chapter 2 (Motion in a Straight Line). These Class 11 Physics Chapter 2 notes are ideal for quick revision just before exams.

Key Terms

• Distance (scalar) vs Displacement (vector).
• Average speed = distance/time; Average velocity = displacement/time.
• Instantaneous velocity = dx/dt; Instantaneous acceleration = dv/dt.

Kinematic Equations

• v=u+at; x=ut+½at²; v²=u²+2ax.

Graphs

• Position-time slope = velocity.
• Velocity-time slope = acceleration; area = displacement.

Relative Velocity

• v_AB = v_A − v_B.

One-Line Summary

Motion in a straight line is described using position, displacement, velocity, and acceleration (including instantaneous, calculus-based definitions), governed by three kinematic equations for uniform acceleration.

Written by Satish

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