Question

What is speed? State it's units and types. Explain instantaneous speed and average speed.

Answer 1

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Here is your answer!!

⚫Speed = The speed of a body is the distance traveled in unit time.The units of speed in CGS system is cm/s and in SI system is m/s.

The formula for speed::

Speed = distance/time

⚫ There are two types of Speed :

a.) Uniform Speed

When a body moves equal distance in equal interval of time throughout its motion,it is said to have uniform Speed.

b.) Non-Uniform or variable speed::

A body said to move with variable speed if it covers unequal distances in equal interval of time.

⚫ Instantaneous Speed :

The speed of the body at any instant is called instantaneous Speed .

⚫ Average Speed ::

Average Speed is ratio of total distance covered to total time taken.

The formula for Average Speed


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Answer 2

the distance travelled per unit time is known as speed
speed can be calculated by following formula
$speed = distance \div time$
it is a scalar quantity and its unit is kilometre per hour.

it can also be defined as the distance travelled by an object in one houris known as speed.

the speed of an object at an instant. Is known as instantaneous speed.

the sum of all instantaneous speeds divided by the number of number of instantaneous speed is known as average speed of the object.


this can be calculated by the following formula
$avg \: speed =( s1 + s2 ) \div 2$
hair S1 is the first instantaneous speed and S2 is the second instantaneous speed and it has been divided by 2 because there are two instantaneous speed