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Answer:
His average speed was of 10.42 m/s
Step-by-step explanation:
We use the following relation to solve this question:

In which v is the velocity(in m/s), d is the distance(in meters), and t is the time, in seconds.
Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds.
This means that 
So his average speed was of:

His average speed was of 10.42 m/s
Answer: 24.6
Step-by-step explanation:
I'm not 100% sure but i got this by doing 300 divided by 125
Answer:
A) 0.42/0.138
B) 0.38/0.019
C) 0.51/0.72
D) 0.46/0.293
Step-by-step explanation: