During a hockey game on a pond, the defenseman passes a 114-g hockey puck over the ice to the center, who fails to catch it. The puck is traveling at an initial speed of 6.7 m/s. It stops in 18 m due to the frictional force on it from the ice. b. The coefficient of kinetic friction between the puck and ice is .

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.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000