Answer:
1.84 seconds
Step-by-step explanation:
Given
initial velocity u = 0m/s
final velocity v = 18m/s
To get the time it takes the bird to make this trip, we will use the equation of motion
v = u+gt
g is the acceleration due to gravity = 9.81m/s²
t is the time
Substitute into the formula:
![18 = 0+(9.81)t\\18 = 9.81t\\9.81t = 18\\t = (18)/(9.81)\\ t = 1.84secs](https://img.qammunity.org/2021/formulas/physics/college/9lnxtykp0c8ol6r06k8c7xo05j73d2ft78.png)
Hence it took the bird 1.84seconds to make this trip