Answer:
Step-by-step explanation:
$1.11
You literally need to apply the formula

where
is the mass and
is the speed
Answer:
(2, 1).
Step-by-step explanation:
x^2 - 4x + 5 = 0
(x - 2)^2 - 4 + 5 = 0
(x - 2)^2 + 1 = 0
The vertex is at (2, 1).
Answer:
8.1146
Step-by-step explanation:
easy :)