The velocity of the pull through the ticker time graph it is going 50 times a second and 0.121 m and 10 dots

0,6

Explanation:

from the picture there are 10 dots. It means that the time needed to make these dot is

10/50 * 1 sec = 0.2 sec

the length (or we can say distance) of 10 dots are 12 cm. we must convert to meter so it become 0.12 m

v = d/t = 0.12/0.2 = 0.6 m/s

carla slowed down in the beginning of her trip, stopped, and then sped up

i would think it's food chain