Question

what is speed and velocity....

Answer 1

speed is a distance in unit time.
velocity is a displacement in unit time.

Answer 2

Speed
 
Speed is a scalar quantity.The speed can also refers to how fast a object is moving.If an object is not moving its speed is zero(0).

Velocity
 
Velocity is a vector quantity.The velocity refers to the rate at which an object is chaning its own position.We must describe a object's velocity as 55miles/hour and to the east.


hope the answer helps....