Answer:
(a) 
(b)
Step-by-step explanation:
Answer:
The middle one
Step-by-step explanation:
When the penny hits the ground, h will = 0.
So: Set h(t) = 0 = -4.9t^2 + 0t + 150 m
Then 4.9t^2 = 150, and so t^2 = sqrt(150 / 4.9) = plus or minus 5.53 sec.
We can use only the positive root, as we're measuring time.
t = 5.5 sec (answer)
I know that B is orthographic.
D is isometric.
A is a net.
C is none.
