Which statement is the BEST analysis of the data for the runner? A The runner starts slower and speeds up, reaching a maximum speed between 50 and 70 m, and then slows down during the final 30 m.
B. The runner covers the first 80 m running at a constant speed and then slows down, reaching a minimum speed during the final 20 m
CO The runner starts siower and speeds up, reaching a constant speed between 20 and 80 m, and then speeds up again during the final 20 m
D. The runner covers the first 70 m running at a constant speed and then speeds up, reaching a maximum speed during the final 30 m.
no

they start with the same

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

where are the vectors ?

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.