Arunner runs 300 m at an average speed of 3.0 m/s. she then runs another 300m at an average
speed of 6.0 m/s.
what is her average speed for the total distance of 600m?
a 2.0 m/s
b 4.0 m/s
c 4.5 m/s
d 8.0 m/s

B. 4 m/s

Explanation:

v=d/t

Running for 300 m at 3 m/s takes 100 seconds and running at 300 m at 6 m/s takes 50 seconds. 100 s + 50 s = 150 s (total time). Total distance is 600 m, so 600 m/ 150 s = 4 m/s.

s the environmental science is a broader field that incorporates many elements of earth and life sciences, whereas ecology is usually more focused on how organisms interact with each other and their surroundings, and often on a very specific population of living things. soo yea

explanation: