Physics · Class 11 · Chapter 3
Motion in a Plane
10 lessons97 min6 simulations10 practice questions
Motion along a line needs only a sign for direction; motion in a plane needs vectors. This chapter builds the vector toolkit (adding, subtracting, scaling and resolving into components) and then uses it for position, velocity and acceleration in two dimensions, with projectile motion and uniform circular motion as the two standard cases.
Also called: projectile motion · 2D motion · vectors · relative velocity
Lessons
10 lessons · 97 min
01Scalars and vectorsNCERT §3.26 min02Multiplying a vector by a numberNCERT §3.36 min03Adding and subtracting vectors graphicallyNCERT §3.47 min04Resolving vectors into componentsNCERT §3.510 min1 sim05Adding vectors analyticallyNCERT §3.613 min2 sims06Velocity and acceleration in a planeNCERT §3.77 min07Constant acceleration in a planeNCERT §3.89 min1 sim08Projectile motionNCERT §3.914 min1 sim09Uniform circular motionNCERT §3.1010 min1 sim10Chapter reviewMust-know facts, traps and formulas15 min
Simulations
6 in this chapter
Resolve a vector: which part gets the cos?In: Resolving vectors into componentsAdding two displacements at an angleIn: Adding vectors analyticallyCrossing a riverIn: Adding vectors analyticallyDropped or thrown: which lands first?In: Constant acceleration in a planeThrow the ball: speed and angleIn: Projectile motionWhy constant speed still means accelerationIn: Uniform circular motion