Mary used a bat to swing at a baseball that was moving toward her. She hit the baseball and it traveled in the opposite direction, right out of the park! Vocabulary words to use (2 per sentence at least):

Force, motion, velocity, cause, effect

Question you're answering: What happened when Mary swung her bat and hit the baseball?

1) I think the velocity of the ball changed because...

2) The caused the ball to ...

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.

its a 5.5 n

glad that