Easy handy notes of kinematics for jee leve l also for 11 and 12th

Chapter 2 Notes
Kinematics

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Physical Quantities
- Scalars
- Has only magnitude (length, mass, time, speed, distance, etc.)
- Kinematics: Only positive values are possible
- Vector
- Has both magnitude and direction (velocity, displacement,
acceleration, etc.)
- Requires a defined origin and a defined positive direction
- Distance
- Scalar
- SI Unit: Meter
- Length covered by a moving body
- Displacement
- Vector
- SI Unit: Meter
- Straight-line distance covered by a moving body measured from
a reference point in a stated direction


Difference between speed and velocity:
Speed Velocity
- Scalar - Vector
- SI Unit: Meter per second - SI Unit: Meter per second
- Distance moved per unit time - Rate of change of
displacement
- Direction of Motion (arrows!)

, Chapter 2: Kinematics
Quantities Type Symbol Unit

Distance Scalar d m

Displacement Vector s m

Speed Scalar v m s-1

Velocity Vector u (initial), v m s-1
(final)

Acceleration Vector a m s-2

Time Scalar t s



Average Speed
- Total distance divided by total time taken


Average Velocity
- Change in displacement (final - initial) divided by change in time (final
minus initial)
- △s represents change in position (length and direction from origin to
final position)




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