A helicopter is ascending vertically with a speed of 5.56 m/sm/s . At a height of 108 mm above the Earth, a package is dropped from the helicopter. How much time does it take for the package to reach the ground? [Hint: What is v0 for the package?]

Guest Jan 7, 2020

#1**+1 **

v0=5.56 m/s

vf=0 (when it hits the ground) xo = original height xf = final height = 0

a= -9.81 m/s^2

xf = x0 + v0 t + 1/2 a t^2

o = 108 + 5.56 t + 1/2 (-9.81) t ^2

0= 108 + 5.56 t - 4.905 t^2 solve for t = 5.29 s

ElectricPavlov Jan 7, 2020