A)-- If the plane is traveling horizontally with a speed of 269 km/h (74.7 m/s )

Question

A)-- If the plane is traveling horizontally with a speed of 269 km/h (74.7 m/s ), how far in advance of the recipients (horizontal distance) must the goods be dropped (see the figure (Figure 1) (a))?

B)-- With what speed do the supplies land?

Show work please, thank you.

Question 10 Resources | 10 of 10 | return to assignment Question 10 Part A plane wants to drop supplies to isolat A rescue mountain climbers on a rocky ridge 235 m below ed If the plane is traveling horizontally with a speed of 269 km/h (74.7 m/s ), how far in advance of the recipients (horizontal distance) must the goods be dropped (see the figure (Figure 1) (a)? Hints Submit My Answers Give Up Part B With what speed do the supplies land? Hints m/s Figure 1 ' of! Submit My Answers Give Up Continue "Dropped", 235 m Site Map Return Your Books Chegg Plav Online Tutoring

Explanation / Answer

initial vertical velocity. v0y = 0

ay = - 9.8 m/s^2

displacement, y = 0 - 235 = - 235 m

Applying y = v0y t + a t^2 /2

- 235 = 0 - 9.8 t^2 /2

t = 6.925 sec

X = 74.7 t

X = 517.3 ..........Ans

(B) vfx = 74.7 m/s

vfy = 0 - (9.8 x 6.925)

vfy = - 67.9 m/s

Speed = sqrt(vfx^2 + vfy^2) = 101 m/s

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