Important Derivations in Physics for Class 11 – Explained Simply
Class 11 Physics is packed with derivations that form the backbone of understanding key concepts. These derivations not only help you score well in exams but also deepen your grasp of how physical principles work. Below, we break down some of the most important derivations from the Class 11 syllabus in a simple, step-by-step manner, focusing on clarity for students. 1. Derivation of Equations of Motion (Kinematics) Why it matters : These equations describe the motion of objects under constant acceleration, used in problems involving vehicles, projectiles, and more. Simple Explanation : First Equation : ( v = u + at ) Start with acceleration: ( a = \frac{v - u}{t} ), where ( v ) is final velocity, ( u ) is initial velocity, and ( t ) is time. Rearrange: ( v - u = at ). Solve: ( v = u + at ). Second Equation : ( s = ut + \frac{1}{2}at^2 ) Displacement ( s ) is the area under the velocity-time graph (a trapezoid). Average velocity = ( \frac{u + v}{2} ). Substitute ( v = u + at ): ( s...