a launched rocket has an altitude, in meters, given by the polynimial h+vt-4.9t^2 where h is the height, in meters, from which the launch occurs, at velocity v in meters per second, and t is the number of seconds for which the rocket is airborne. If a rocket is launched from the top of a tower 100 meters high with an initial upwrd speed of 20 meters per second. What will the height be after 4 seconds?

Answer 1

h = vt - 4.9t^2
from the given ....

h = 20t - 4.9t^2 + 100 , where h is the height above ground

so after 4 seconds
h = 20(4) - 4.9(16) + 100
= 41.6 m above the ground

Answer 2

A square garden has a side length of 5.8 meters what is the perimeter of the garden ? what is the area pf thd garden?