Write couple of paragraphs on "Role of Youths inreforming the society.

Explanation:

They have the ability to learn and adapt to the environment. ... Our youth can bring social reform and improvement in society. We cannot make do without the youth of a country. Furthermore, the nation requires their participation to achieve the goals and help in taking the country towards progress

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.