Quick questions on Quantities and units in mechanics: SI units, scalars, vectors and modelling - Edexcel A-Level Maths

Every derived unit can be built from the base units by replacing each quantity with its unit. Velocity is displacement over time, so its unit is $\dfrac{\text{m}}{\text{s}} = \text{m s}^{-1}$. Acceleration is the rate of change of velocity, giving $\dfrac{\text{m s}^{-1}}{\text{s}} = \text{m s}^{-2}$. Force is mass times acceleration, so $\text{kg} \times \text{m s}^{-2} = \text{kg m s}^{-2}$, which is given the name newton.

State the SI unit of force and express it in base units. [2 marks]

Classify each as scalar or vector: speed, displacement, mass, acceleration. [2 marks]