A rock falls off a cliff and hits the ground after three seconds. The rock's velocity is 29. 4 m/s when it hits the ground. What is its acceleration of the rock in the downward direction? 0. 31 ms2 3 ms2 9. 8 ms2 88. 2 ms2.

d. learned preferences i believe is your answer

show the wavelengths of a wave. show the crests of a wave.

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.