Dump tower is 85 stories tall. a small, 1.1-kg object is dropped over the side of the roof of the tower and accelerates toward the ground. the mass of the planet housing dump tower is 2.3 times the mass of mars and the radius of the body is 1.0 times the radius of io. you will track the object for its entire fall. each story of this tower is 2.54 meters tall.

how many seconds will it take the object to reach the ground and what will be its impact speed with the ground?

where is the photo and the answer choices?

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