difference between velocity and speed

velocity - (хурд, чиглэлийн дагуу хурд)Velocity is speed with respect to direction. Speed is a scalar quantity while velocity is a vector.  
speed - (хурд, хурдны хэмжээ)SPEED- It is the distance moved by an object per unit time. 

difference between velocity and speed

• The difference between speed and velocity is that speed is a scalar quantity while velocity is a vector quantity. Velocity takes into account the magnitude of a moving object measured in a specific direction while speed is the measure of magnitude or strength of a moving object.

• Speed is the rate of motion, or the rate of change of position. It is expressed as distance moved (d) per unit of time(t). Speed is a scalar quantity with dimensions distance/time. Speed is measured in the same physical units of measurement as velocity, but does not contain an element of direction. Speed is thus the magnitude component of velocity. Velocity contains both the magnitude and direction components.                                         Common speeds of moving objects
  For human beings, an average walking speed is about 3 mph (~5 km/h, 1.39m/s),
  The speed of long distance jogging for average persons is about 6 mph (~10 km/h, 2.7 m/s).
  Top athletic sprinters can run at 23.03 mph (~36.85 km/h, 10.24 m/s) within a short distance such as a 200 meters dash.
  Cycling can average 12 mph (~20 km/h, 5.56 m/s)
  Car can average 65 mph (~104 km/h, 28.9 m/s ) on highway 
  A 747 Airplane has an average speed 565 mi/hr 

• In physics, speed is defined as the rate of increase (or decrease) of distance travelled, with time. Linear velocity is the rate of increase (or decrease) of distance traversed by a body in a particular direction. Speed is defined with the omission of reference to direction. Thus, velocity is a vector quantity and speed is a scalar one.

• Speed is the rate of change of motion, i.e. distance moved by an object in a specified time irrespective of direction. Velocity is speed with respect to direction. Speed is a scalar quantity while velocity is a vector.                                                                                   
• in common terms, speed and velocity are the same.. 
  the rate at which a certain body was moving,, 
  scientifically, 
  speed refers only to the rate at which a certain body travels from one place to another, period. but, 
  velocity is the speed of a certain body from one point to another at any given direction.

• They are the same. In Mexico the speed limit signs say Velocidad and here speed limit. It's just the scientific word for speed.

• ...the velocity is the 'rate of change of an object with respect to its position' it is a vector quantity, means there must specify a direction to which the object is moving. 
  
  ..speed is a scalar quantity, means no need of specify the direction..these are the simplest definitions..

• Velocity has two components: 
  
  One is value. 
  
  Other is direction. 
  
  It is a vector. Car was heading east on Mango St. at 20 mph. 
  
  **************************************... 
  
  Speed is just the modular value of the velocity. It has one component. 
  
  It is a scalar. On mango street car's speed was 20mph. 
  
  Speedometer gives you speed of travel only but you know which direction you are going.

• It's simple PHYSICS, 
  
  SPEED- It is the distance moved by an object per unit time. 
  
  but, VELOCITY- It is the speed an object takes up, in any direction.