Triton is a moon of Neptune. It has a
mass of 2.14 x 10^22 kg and a surface
gravity of 0.779 m/s^2
What is the radius of Triton?

1.35 x 10^6

Explanation:

{(6.67 x 10^-11) x (2.14 x 10^22)} / (x)^2 = .779

I don't know how that works but I found it online and it was right for Acellus

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