Answer:
4.0 m/s
Explanation:
In the first part of the run, the athlete runs a distance of
at a speed of
So, the time he/she takes is
In the second part of the run, the athlete covers an additional distance of
with a speed
So, the time taken in this second part is
So, the total distance covered is
d = 300 m + 300 m = 600 m
And the total time taken
t = 100 s + 50 s = 150 s
Therefore, the average speed for the entire trip is
<span>Wilhelm Conrad Roentgen discovered the x-ray
</span>
Gravity<span> attracts </span>all objects<span> towards one </span>another<span>.</span>
C.
Thanks me later, that's my answer.