Answer:

Step-by-step explanation:
t = Time taken
u = Initial velocity =17 m/s
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s² = a

Total height the rock is to fall when it is 8 meters from the ground is 

Time taken to reach the maximum height is 1.73 s.

Time taken from the maximum height to the point which is 8 m from the ground is 2.77 s.
So, time taken from the moment of the throw to the point 8 m from the ground is
.
Answer:
x=4.8
Step-by-step explanation:
AE.EC=DE.EB
6×8=10×x
48=10x
x=4.8
Answer:
213
Step-by-step explanation:
wda
2x^2 - 6x - 56
2 (x^2 - 3x - 28)
2 (x - 7)(x + 4)
A) 460 ≥9.50h+60
B) the minimum of hours Jessie can work is about 42 hours.