6. if the number is 91.8, your answer is 459
7. 50 percent
8. 85 percent
Answer:
31m/s
Step-by-step explanation:
Using the equation of motion
v² = u² + 2gH
H is the height of fall = 49m
g is the acceleration due to gravity = 9.8m/s²
u is the initial velocity = 0m/s
v² = 0² + 2(9.8)(49)
v² = 960.4
v = √960.4
v = 30.9m/s
v ≈ 31m/s
Hence the velocity of water at the turbine is 31m/s
X= 5.1x+11.3
Explanation : combine like terms which is 5.1x and 3x and you get the answer D!