The greatest speed from the following is 0.2 km/s per second. The correct option is C.
The rate at which an object moves along a path is called speed.
The following speeds are 20 m/s, 200 cm/s, or 0.2 km/ s
Convert all in meters
20 m
200 cm = 2 m
0.2 km = 200 m
Here, 200 m is greater. Hence, its speed is greatest.
Thus, the correct option is C, 0.2 km/s.
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