Peregrine falcons frequently grab prey birds from the air. sometimes they strike at high enough speeds that the force of the impact disables prey birds. a 480 g peregrine falcon high in the sky spies a 240 g pigeon some distance below. the falcon slows to a near stop, then goes into a dive--called a stoop--and picks up speed as she falls. the falcon reaches a vertical speed of 45 m/s before striking the pigeon, which we can assume is stationary. the falcon strikes the pigeon and grabs it in her talons. the collision between the birds lasts 0.015 s. a. what is the final speed of the falcon and pigeon? b. what is the average force on the pigeon during the impact?

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.

measure their densities same density, same sub

grav potential energy