Question

EASY POINTS + BRAINLIEST PLZ HELP!!!!

Answer 1

Answer:

t = 2.61

Step-by-step explanation:

h (t) = (1/2) x (- 9.8) x t ^ 2 + 12 x t + 2

h (t) = -4.9 x t ^ 2 + 12 x t + 2 (rewritten)

When the ball hits the ground:  

-4.9 x  t ^ 2 + 12 x t + 2 = 0

Solved:

t1 = -0.16

t2 = 2.61

The negative is irrelevant here. Hence: 2.61.