Answer:Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
Explanation:
Answer:
I don't know I'm terrible at AP history
Well, if we had never explored there, we wouldn't have any information on that area at all.
Answer:
0.447 sec
Explanation:
velocity = distance/ time
distance 'h' is a function of time 't' given by

⇒ differentiating equation
⇒ velocity = 
⇒ acceleration =
= 24 
deceleration due to gravity = -9.8 m/
= - 9.8 x 3.281 = - 32.154 ft/ 
Net deceleration = 24 - 32.154 = - 8.15 ft/
at maximum height v = 0
=
+ 2ah
⇒ 0 =
+ 2 (-8.15)h
⇒ h = 118.72 ft⇒
118.72 = 12
+ 44t + 16
⇒
- 102.72 = 0
⇒ t = -44 ±
/ (2 x 12)
t = 0.447 sec