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A plane flying horizontally, at a speed of 50.0 m/s and at an elevation of 160 m, drops a package. Two seconds later it drops a second package. (a) How far apart will the two packages land on the ground? (b) What is the velocity of each package when it hits the ground?
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a) distance between packages = 50*2 = 100m

b) On landing,

horizontal speed = 50m/s

vertical speed = sqrt (2gh)

= sqrt (2 * 9.8 * 160)

= 56

Total speed on landing = sqrt (50^2 +56^2)

= 75.07 m/s
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