Which of these earth spheres interact when wind carries away the top soil from one place and deposits it in another place? a. cryosphere and geosphere b. cryosphere and hydrosphere c. atmosphere and geosphere d. atmosphere and hydrosphere

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

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