Question

define : speed, average speed, and velocity !

Answer 1

Answer :-

★ Speed = It is the distance travelled by a body per unit time.

Formula:-

$\: \: \: \: \: \: \: \sf \: Speed = \frac{Distance}{Time} \: or \: S = \frac{V}{t}$

The SI unit of speed in m/s.

★ Average speed = It is the total distance travelled by the total time taken to cover this distance.

Formula :-

$\: \: \: \: \: \: \: \sf \: Average \: speed = \sf\frac{Total \: distance \: travelled}{Total \: time \: taken}$

★ Velocity = Velocity of a body is defined as the displacement produce per unit time in a given direction.

Formula :-

$\: \: \: \: \: \: \: \sf \: Velocity = \sf\frac{Displacement}{Time} = \sf\frac{S² - S1}{t² - t1}$

The SI unit of velocity is m/s.

Answer 2

★ speed = It is the distance travelled by a body per unit time.

★ Average speed = It is the total distance travelled by the total time taken to cover this distance.

★ Velocity = Velocity of a body is defined as the displacement produce per unit time in a given direction.