A helicopter starts from rest at point A and travels along the straight-line path with a constant accel eration a. If the speed u = 28 m/s when the alti tude of the helicopter is h = 40 m, determine the values of r, r, 0, and ö as measured by the tracking device at O. At this instant, 0 40°, and the dis- tance d = 160 m. Neglect the small height of the
A helicopter starts from rest at point A and travels along the straight-line path with a constant accel eration a. If the speed u = 28 m/s when the alti tude of the helicopter is h = 40 m, determine the values of r, r, 0, and ö as measured by the tracking device at O. At this instant, 0 40°, and the dis- tance d = 160 m. Neglect the small height of the
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2/142 A helicopter starts from rest at point A and travels
along the straight-line path with a constant accel-
eration a. If the speed v = 28 m/s when the alti-
tude of the helicopter is h 40 m, determine the
values of r, r, 0, and ö as measured by the tracking
40°, and the dis-
160 m. Neglect the small height of the
tracking device above the ground.
device at O. At this instant, 0
=
tance d
V
=
|h
Problem 2/142
A
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