The drawing shows two boxes resting on frictionless ramps. one box is relatively light and sits on a steep ramp. the other box is heavier and rests on a ramp that is less steep. the boxes are released from rest at a and allowed to slide down the ramps. the two boxes have masses of 8 and 38 kg. if a and b are ha = 4.6 and hb = 1.3 m, respectively, above the ground, determine the speed of (a) the lighter box and (b) the heavier box when each reaches b. (c) what is the ratio of the kinetic energy of the heavier box to that of the lighter box at b?

he kicked it 10 feet straight up into the air? i think this works.

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.