Question

Which statement best explains the difference between velocity and speed?

A) Speed is a vector and requires a direction to completely describe it.

B) Velocity is a vector and requires a direction to completely describe it.

C) Speed is measured in units of meter and velocity is measured in units of meters per second.

D) Velocity is measured in units meters per second and speed is measured in units of miles per hour.

Answer 1

Answer by mimiwhatsup: B) Velocity is a vector and requires a direction to completely describe it.

Velocity is the speed and direction of an object in motion.

Answer 2

Step-by-step explanation:

Speed : It is defined as the overall distance travelled by an object divided by total time taken. The mathematical expression is given by :

`s=(d)/(t)`

It is a scalar quantity i.e. it has only magnitude.

Velocity : It is defined as the total displacement (D) of the particle divided by total time taken. It can be given by :

`v=(D)/(t)`

It is a vector quantity. It have both magnitude and direction.

Out of given options, the statement that best explains the difference between velocity and speed is (B) i.e. "Velocity is a vector and requires a direction to completely describe it".