Acar drives off a cliff next to a river at a speed of 30 m/s and lands on the bank on theother side. the road above the cliff is horizontal and 8.3 m above the other shore wherethe car lands. the tires on the car all hit at once and the air resistance is insignificant. how long is the car in the air?

1.301 s

Explanation:

Given

Initial Velocity(u)=30 m/s

Height of cliff=8.3 m

Time taken to cover 8.3 m

here Initial vertical velocity is 0

Horizontal distance

wavelength variability is the right one

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.