Question

question is in attachment

Answer 1

Answer:

1 s or 0.5 s

Step-by-step explanation:

Given :

h = - 16 t² + 24 t + 6

It is given that height = 14

So substitute the value of h in the equation.

- 16 t² + 24 t + 6 = 14

= > - 16 t² + 24 t - 8 = 0

= > 16 t² - 24 t + 8 = 0

= > 16 t² - 16 t - 8 t + 8 = 0

= > 16 t ( t - 1 ) - 8 ( t - 1 ) = 0

= > ( 16 t - 8 )( t - 1 ) = 0

Either t - 1 = 0

= > t = 1

Or

16 t - 8 = 0

= > 16 t =  8

= > t = 8/16

= > t = 1/2 = 0.5

The time will be 0.5 seconds or 1 seconds.

Answer 2

Answer:

The Answer is in attachment..