Velocity is speed in a specific direction, so it is a vector quantity. Velocity is the rate of change of displacement with time. It tells how fast and which way an object moves. Units are metre per second (m/s).TypesInstantaneous velocity: Velocity at a particular moment.Average velocity: Total displacement divided by total time.Uniform velocity: Constant magnitude and direction.Variable velocity: Changes in size or direction with time.FormulasAverage velocity, v̄ = Δx / ΔtInstantaneous velocity, v = dx/dt (calculus form)Uniform acceleration, v = u + atVelocity vs speedPropertyVelocitySpeedTypeVectorScalarDepends on direction?YesNoCan be zero while moving?Yes, if round trip displacement is zeroNo, if distance covered is not zero

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What is velocity?

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Detailed Solution

Velocity is speed in a specific direction, so it is a vector quantity. Velocity is the rate of change of displacement with time. It tells how fast and which way an object moves. Units are metre per second (m/s).

Types

Instantaneous velocity: Velocity at a particular moment.
Average velocity: Total displacement divided by total time.
Uniform velocity: Constant magnitude and direction.
Variable velocity: Changes in size or direction with time.

Formulas

Average velocity, v̄ = Δx / Δt
Instantaneous velocity, v = dx/dt (calculus form)
Uniform acceleration, v = u + at

Velocity vs speed

Property	Velocity	Speed
Type	Vector	Scalar
Depends on direction?	Yes	No
Can be zero while moving?	Yes, if round trip displacement is zero	No, if distance covered is not zero

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