Sh-it i just realized that when you add points to gain off your question like if you asked a question and you put 100 points if answered it takes your points -_- Describe how ice is involved in both weathering and erosion processes.

Really ? I never realized that

Explanation:

maybe I'll think of this before I answer next time

what

Explanation:

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.

i'm pretty sure its b i might be wrong though!