Standard units

Which of these is the standard unit for mass in Physics?

(e.g. when you are calculating KE, GPE, or using F = m x a)

Which of these is the standard unit for distance/length/height/displacement in Physics?

Which of these is the standard unit for speed and velocity?

A car is moving at 4m/s over 100km. What quantity is '4m/s'?

A car is moving at 4m/s over 100km. What quantity is '4m/s'?

A car is moving at 4m/s over 100km. What quantity is '100km'?

A car starts moving at 2m/s, and accelerates at 3m/ $s^2$  .
What quantity is 3m/ $s^2$ ?

A car starts moving from rest, and accelerates at 6m/ $s^2$  over 300m.

What quantity is '300m'?

A car starts moving from rest, and accelerates at 6m/ $s^2$  over 300m.

What quantity is '6m/ $s^2$ '?

A 700kg car which was at rest is hit by another car with a force of 3500N, and accelerates at 5m/ $s^2$  .
What quantity is '3500N'?