Why is genetics considered a theory and not a hypothesis?

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.

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Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?