Explanation:

Formula: speed = distance/time

5/10= 1/2

speed of the body is 1/2

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To find the speed of the body, you can use the formula:

Speed = Distance / Time

where:

Distance = 5 km (given)

Time = 10 seconds (given)

Now, plug in the values:

Speed = 5 km / 10 s

To get the speed in appropriate units, you need to ensure that the units are consistent. Since 1 km = 1000 meters, we can convert the distance to meters:Speed = 5000 meters / 10 s

Speed = 500 meters per second

So, the speed of the body is 500 meters per second.