Question

define velocity and si unit ​

Answer 1

Explanation:

Velocity is defined as the rate of change of distance of the body with respect to time. Its unit in SI is km/s. ... Velocity is defined as the rate of change of distance of the body with respect to time. Its unit in SI is m/s.

Answer 2

REQUIRED ANSWER

⇒ Velocity is defined as the speed of a particular object moving in a fixed direction.

⇒ The SI unit of Velocity is expressed in m/s , where m = metre and s = second.

EXTRA INFORMATION :

1) Formula for calculating velocity of a body :-

v = ∆x / ∆t , where

• v = average velocity
• ∆t = change in time
• ∆x = displacement of the object

2) A velocity can be negative , positive or zero.

3) The velocity of an object is said to be uniform only when it completes equal distances in equal repetition of time.

4) Velocity is a vector quantity because it has both magnitude and direction.