Which of the following is an obstacle to creating computer-based models for tracking a hurricane?
answer

most sources of data about hurricanes are anecdotal and unreliable.

all of the above

hurricanes form over water, where it is difficult to observe them.

forecasters must consider a large number of variables that affect the path of the storm.

Explanation:

Btw this is the correct answer, and the other person that said this answer got a low rating...they got it right though.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s