Which is the largest animal
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The Antarctic blue whale 

Explanation:

The Antartic blue whale is the largest animal on the planet its weight is 400,000 pounds which is approxomately the weight of 33 elephnats and it can reach till 98 feet in length.

The Blue Whale

And to be more specific THE ANTARTIC BLUE WHALE

It lives in the sea of course but if u ask which is the largest animal its the blue whale itself, and if u want the largest animal in the land its the elephant as of the present, there were dinosaurs which were bigger than the elephant but they are not of present.

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