A car travelling at 15 m/s comes to rest in a distance of 14 m when the brakes are applied. Calculate the deceleration of the car.

-8.04 m/s2

Explanation:

To find the answer to this, you have to use the 4th kinematic equation:

You plug into the equation to get:

solve for a to get

-8.04 m/s2

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.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.