Kinematic terms

Displacement (s)

Vector quantity: Final position-initial position so change in position

Distance

Scalar quantity, measures amount travelled

Speed

Scalar quantity, change in distance over change in time v=d/Δt

Velocity

Vector quantity, change in displacement over change in time v=Δs/Δt or 2πr/T or wr

Acceleration (a)

Vector quantity, change in velocity over time. Δv/Δt. Centripetal acceleration = v²/r

Initial Velocity (u)

Velocity at the start

Final velocity (v)

Velocity at the end

Time (t)

Scalar quantity In seconds

Linear momentum (p)

Vector quantity in kilograms in meters per second. Found with p=mv. To find with tow objects use

Impulse (J)

Vector quantity, Change in momentum found with J=F⋅Δt

Angular Velocity (w)

Rate of change of the angle covered by the body measured in rad/s.

Work (W)

Scalar quantitymeasured in joules. W=Fscos(Θ). (Force x displacement x cos (angle between force and displacement).

Kinetic Energy (E_k)

Is Scalar and measured in joules. Energy object posess due to motion. E_k=1/2mv² (mass x velocity)

Gravitation potential energy (E_g)

Scalar quantity measured in joules. ^ΔE_g=mgΔh (mass x gravitational field strength x height

Elastic potential Energy (E_h)

Scalar quantity measured in joules ΔE_h=1/2kΔx². (spring constant x change in length)

Power (P)

Scalar quantity measured in watts P=W/t (Work over time)

Energy density (u)

Scalar quantity e/v