Examples based on friction

(1) Use of word 'AND' and Examples based on this concepts

(2) Use of word 'OR' and Examples based on this concepts

Write any two examples that show friction is an evil .

Examples Based on Projectile Motion || Projectile on Inclined Plane || Range on Inclined Plane || Examples Based on Inclined Plane

Examples based on Evaluation of trigonometric limits.

Examples Based on Projectile Motion || Equation OF Trajectory || Examples on Trajectory

Basic question based on Frictional Force

Examples on Friction || Block on Incline Plane