Question

Differenciate between velocity and speed?

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Answer 1

Answer:

Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. ... On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.

Answer 2

Answer:

Speed:

i) speed of a body is the distance traveled by the body in unit time

ii) if the body travels a distance in time then its speed is

                                        v = distance/ time

iii) SI unit of speed is metre per second (m/s)

iv) since speed has only magnitude it's a scalar quantity.

Velocity:

i) Velocity is defined as the rate of change of displacement

ii) Velocity is a ratio of displacement by time taken

                      V = displacement / time

iii) SI unit of velocity is metre per second (m/s)

iv) Velocity has both magnitude and direction hence, it's a vector quantity