The arrows below represent the velocities of two vehicles. Which claim explains why the velocity of each vehicle is a vector quantity? It can change over time. It has direction and size. It is a measurable quantity. It uses a measure of speed.

It has direction and size.

Explanation:

All physical quantities are generally grouped into two;

i) Vector quantities

ii) Scalar quantities

Vector quantities are those quantities that has both magnitude (size) and direction.

Scalar quantities are those quantities that has magnitude (size) and no direction.

Velocity is a vector quantity because it has direction and size.