Question

Define (a) speed, (b) velocity. Bring out clearly
the difference between the speed and velocity.​

Answer 1

Answer:

Speed:

Speed of an object is the magnitude of the change of its position;direction is not necessary thus it is a scalar quantity.

Velocity:

The speed of something in a given direction. It is a vector quantity.

Explanation:

Speed doesn't require any direction but it has magnitude

Velocity requires direction as well as magnitude

Answer 2

- The Speed of an object is the magnitude of the change of its position.

- Velocity is equivalent to a specification of an object's speed and direction of motion.

Formula

Speed = Distance / Time

Velocity = Displacement / Time

Differences

• Speed is Scalar (don't specify direction) whereas Velocity is Vector quantity (specify direction)
• Speed can't be negative Velocity can be negative to specify the direction(forward +ve, backward -ve)