Lynn is walking up a hill with a horizontal distance of 20m and a vertical distance of 12m. What is her displacement at the top? * A. 23.3 B.26.4 C.34.5 D.16.9

8 meters above the spring

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

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it