# Question #4695d

##### 1 Answer

May 30, 2017

Average speed is defined as the distance travelled by an object in a unit time. The SI unit is

#### Explanation:

Average speed is given by the formula:-

x = total distance travelled (in metre)

t = time taken (in second)

In the question,

and for time taken (t) = 4pm - 2.48 pm = 1 hour and 12 minutes = 4320 second.

Hence, by the given relation, the average speed is:-

or