Define velocity.write relationship between speed and Velocity.
Answers
✓✓Define velocity.write relationship between speed and Velocity.
Velocity of body is defined as displacement covered by it's per unit time.
- It is a vector quantity.
- SI unit of velocity is m/s.
- C.G.S unit of velocity is cm/s.
- It also describe motion.
when a body moves in a straight line in a single direction then Speed=|velocity|
when a body moves in a straight line and changes it's direction then Speed> |velocity|
★velocity may be positive, negative and zero.
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).✔️✔️✔️
Moreover, it is directly related to displacement and inversely relates to the time traveled. Also, its unit is meter per second (m/s). Velocity formula = displacement ÷ time. Displacement = final position – initial position or change in position. Time = taken to cover the distance.
Speed is a scalar quantity which specifies the rate at which distance is changing but does not specify in which direction. Velocity is a vector quantity which specifies both speed and direction. So speed is the magnitude of velocity (the length of the vector).