a block with a mass of 3.8 kilograms slides with a velocity of 6 m/s on a frictionless surface. it hits a horizontal spring with a spring constant of 200 n/m. how much work does the block do on the spring?

v 154.9= 0.9 length length s little over 154.9cm

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.

if they have a finite resultant

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement