6) A force Fis exerted on a 5 kg block to move it across a rough surface, as 1 point

shown. The magnitude of the force is initially 5 N, and the block moves at a

constant velocity. While the block is moving the force is instantaneously

increased to 12 N. How much kinetic energy does the block now gain as it

moves a distance of 2 m?*

i need the answer to this too but idk it ; -;

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.