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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?

Added Sun, 26 Jul '15

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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

Added Sun, 26 Jul '15

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