A spherical balloon has a radius of 7.15 m and is filled with helium. How large cargo can it lift, assuming that the skin and structure of the balloon have a mass of 900 kg? Neglect the buoyant force on the cargo volume itself. Express your answer using two significant figures.
m=

c. newton's third law of motion

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

365.25 earth days are in the year of a light year