Question

difference between speed and velocity

Answer 1

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1. It is defined as the rate of change of distance.
velocity is defined as the rate of change of displacement.

2. Speed is a scalar quantity.
velocity is a vector quantity.

3.Speed can never be negative or zero.
velocity can be negative,zero or positive

4. Speed is velocity without direction.
Velocity is directed speed.

5. Speed may or may not be equal to velocity.

6. Speed never decreases with time. For a moving body, it is never zero.
Velocity can decrease with time. For a moving body , it can be zero.

7. Speed in SI is measured in ms-1
Velocity in SI, is measured in ms-1

Answer 2

The short answer is that velocity is thespeed with a direction, while speeddoes not have a direction. Speed is a scalar quantity—it is the magnitude of the velocity. Speed is measured in units of distance divided by time (e.g., miles per hour, feet per second, meters per second, etc.).