The formula for speed is given by:
[tex] speed = \frac{distance}{time} [/tex]
speed is product of distance and time.
We are given distance as 4 kilometers and time is 30 minutes.
plugging these values in the formula given above we have,
[tex] speed = \frac{4}{30} [/tex]
dividing 4 by 30 we have 0.133
so average speed is 0.133 kilometer per minutes.
We can also convert kilometers to meters as follows:
1km =1000 m
so 4 km =4*1000 = 4000 m
Also we have 1 minute = 60 seconds
so 30 minutes = 30 *60 = 1800 seconds.
so speed = 4000/ 1800 = 2.22 m / second.
Answer:
Average speed is 0.133 km/min or 2.22 m/sec.
