Question

Write difference between Uniform speed ; Average speed and Instantaneous speed.​

Answer 1

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>Uniform speed can be defined as if the speed of body don't change with time or if a body is covering same distance after each second.

>it has zero linear acceleration because change in speed is zero.

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>Average speed is defined by mathematically relationship:

Average speed=total distance travelled/total time taken

Average speed is measured in metre per second .

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>Instantaneous speed is the speed of an object at a particular moment in a time.

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Answer 2

Explanation:

$\huge \boxed{ \bold{speed}}$

the distance travelled by a body per unit time over a short interval of time is called its speed .

$\sf {speed = \frac{dis. \: travelled \: in \: short \: interval \: of \: time}{time \: interval}}$

• Speed is a scalar quantity .
• it has only magnitude .
• the SI unit of speed is meter/second or m/s or ms-¹.

$\huge \bold{average \: speed}$

the average speed of a moving body is equal to the ratio of the total distance travelled by a body to the total time taken by it to cover that distance .

$\sf{average \: speed = \frac{total \: distance \: travelled}{total \: time \: taken}}$

• average speed is a scalar quantity.
• SI unit of average speed
• $\rm\frac{meter }{second} = \frac{m}{s}$

$\bold{uniform \: speed}$

when a moving body travels equal distance in equal intervals of time it is spective of direction, then it is said to have uniform speed.

$\bold{instantaneous \: speed}$

Instantaneous velocity is defined as the rate of change of position for a time interval which is very small (almost zero).