1. John is a runner. He runs the 200m sprint in 15s. What speed did he travel at? (in m/s).

Explanation:

Speed = Distance traveled/ Time taken

Distance = 200m

Time = 15s

Speed = 200/15 = 13.33m/s

The answer you are looking for is approximately 13.3 m/s.

First, writing out the formula for the speed of an object, encompassing distance and time, in meters per second, or m/s,

S=D/T.  

"S" stands for "Speed."

"D" stands for "Distance."

"T" stands for "Time."

Speed (S)=

Distance (D)=200m.

Time (T)=15s.

Substituting the given values of the variables,

S=200m/15s.

200÷15=13.3333≈13.3.

So, therefore, the final answer is approximately 13.3 m/s.

*Other answers may be a little different, depending on how you round it.

I hope that this has helped answer your question. Good day to you.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: