Over 75 seconds a truck traveled at a constant velocity of 25 meters per second to the west. Find the trucks displacement

1875 m west

Explanation:

Take east to be the positive direction.  Given:

v₀ = -25 m/s

a = 0 m/s² (constant velocity)

t = 75 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (-25 m/s) (75 s) + ½ (0 m/s²) (75 s)²

Δx = -1875 m

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.