Answer:
1.78m/s
Step-by-step explanation:
Given parameters:
Velocity of the arrow = 22.8m/s
Height of the wall = 15.5m
Unknown:
Time taken for the arrow to reach the ground = ?
Solution:
To solve this problem we employ the appropriate motion equation:
H = ut +
g t²
H is the height
u is the initial velocity = 0
g is the acceleration due to gravity = 9.8m/s²
t is the unknown time
15.5 =
x 9.8 x t²
15.5 = 4.9t²
t² = 3.16
t = 1.78m/s