How is the milky way changing? a. large numbers of stars are being born inside nebulas. b. the milky way does not change. c. large numbers of stars are dying inside nebulas. d. large numbers of stars are undergoing blue-shift.
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Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.