Class 9 Chapter 8 and 9 Exam Oriented

CHAPTER 8: MOTION



🔹 Motion

An object is said to be in motion if its position
changes with time.



🔹 Types of Motion

 Rectilinear motion – straight line

 Circular motion – circular path

 Periodic motion – repeats after equal intervals

 Uniform motion – equal distances in equal time

 Non-uniform motion – unequal distances



🔹 Distance & Displacement

 Distance: total path covered (scalar)

 Displacement: shortest distance (vector)



⭐ CLASS 9 PHYSICS – MOTION + LAWS OF MOTION
FORMULA SHEET



🚀 PART 1 – MOTION (Chapter: Motion)



✅ 1. Distance & Displacement

⭐ Concept

 Distance: Total path length (scalar)

 Displacement: Shortest distance with direction
(vector)

⭐ Where used

, 👉 Conceptual questions
👉 Average speed vs velocity
👉 Graph interpretation

⚠️Trap: displacement can be zero, distance cannot



✅ 2. Speed

⭐ Formula
Distance
Speed=
Time

⭐ Where to use

👉 Basic motion numerical
👉 Uniform motion
👉 Graph slope (distance–time)



✅ 3. Velocity

⭐ Formula
Displacement
Velocity=
Time

⭐ Where to use

👉 Direction involved motion
👉 Average velocity
👉 Equation of motion problems



✅ 4. Average Speed
Total distance
Average speed=
Total time

👉 Non-uniform motion problems



✅ 5. Acceleration

⭐ Formula
v−u
a=
t