A parachutist is falling with terminal velocity. Which of the following statement is not correct?

a) Gravitational potential energy is converted into kinetic energy of the air

b) G. P.E is converted into K. E of the parachutist

c) G. P.E is converted into thermal energy of the air

d) G. P.E is converted into thermal energy of the parachutist

the average speed is 24.57 km/hr

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.

access to city

explanation: