Explanation:
An object which moves 10 km in 30 minutes .
we have to find the average speed of the object .
Changing unit of time into hour
Time = 30/60 hour
Time = 1/2 hour
Time = 0.5 hour
Now let's calculate the average speed
[tex] \rm\bf \: Average \: speed \: = \frac{Total \: distance}{Total \: time \: } [/tex]
Put the value we get
[tex] \dashrightarrow \sf \: Average \: speed \: = \frac{10}{0.5} \\ \\ \dashrightarrow \sf \: Average \: speed \: = \frac{100}{5} \\ \\ \dashrightarrow \sf \: Average \: speed \: = \cancel \frac{100}{5} \\ \\ \dashrightarrow \sf \: Average \: speed \: =20km {hr}^{ - 1} [/tex]
So, the average speed is 20km/hr
