Una flecha se dispara verticalmente hacia arriba con una velocidad inicial de 80 ft/s. ¿Cuál es su altura máxima?

La altura máxima de la flecha es 99.459 pies

Explanation:

Los parámetros dados son;

La vertical inicial con la que se dispara la flecha, u = 80 pies / s

La distancia vertical recorrida por la flecha viene dada por la siguiente ecuación de movimiento;

v² = u² - 2 · g · s

Dónde;

v = La velocidad final de la flecha = 0 a la altura máxima

s = la altura de la flecha, = Altura máxima

u = La velocidad vertical inicial de la flecha

g = La aceleración debida a la gravedad = 32,17405 pies / s²

Por lo tanto, tenemos;

0² = 80² - 2 × 32.17405 ×

80² = 2 × 32.17405 ×

6400 = 2 × 32.17405 ×

= 6,400/(2 × 32.17405 ) ≈ 99.459 ft

= 99.459 ft

La altura máxima= 99.459 ft

i agree kid

explanation:

a

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.