Un resorte ubicado sobre un riel de aluminio, se comprime30 cm mediante una fuerza de 250N. Se coloca junto al resorte una pequeña pieza de cobre de modo que salga disparada como un proyectil cuando se libere el resorte. ¿Qué velocidad adquiere la pieza cuando sale del extremo del riel?

an obstruction

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a.   mass number from atomic number

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