Answer:

Step-by-step explanation:
If air resistance is neglected, the energy is constant. That means that in every point in the trajectory the energy is the same.
At the point of height h, all the energy is potential and velocity is zero (no kinetic energy)

At point of height h/4, some of the potential energy has transformed in kinetic energy and the velocity is no longer zero. But we know the total amount of energy is the same as the maximum height point.
With that information, we can calculate the velocity v:

V = (pi)r^2 * h
V / (pi)r^2 = h
V = 904.78
r = 6
904.78 / (3.14 * 6^2) = h
904.78 / (3.14 * 36) = h
904.78 / 113.04 = h
8.004 rounds to 8 = h........height is 8 cm
Answer:
Whats the question?
Step-by-step explanation:
or is it just like a fake question
Answer:
a=1/3
Step-by-step explanation:
from the point on the graph
x=4 and y=8
substitute them into the equation:
y=a(x-2) (2x+4)
you will get
8=a(4-2) (2(4)+4)
8=a(2) (8+4)
8=a(2) (12)
8=2a×12
8=24a
divide both sides by 24
8/24=24a/24
1/3=a or a=1/3
Answer:
12 - x/11 > 8
12 -8 - x/11 > 8 -8
4 -x/11 > 0
4 -x/11 + x/11> 0 + x/11
4 > x/11
44 > x
x is less than 44
Step-by-step explanation: