Physics

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A hot air balloon is traveling vertically upward at a constant speed of 3.9 m/s. When it is 20 m above the ground, a package is released from the balloon. After it is released, for how long is the package in the air? The acceleration of gravity is 9.8 m/s

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    A HOT AIR BALLOON IS RISING UPWARDS AT A CONSTANT VELOCITY OF 5 M/S. WHEN THE BALLOON IS 100M ABOVE THE GROUND, A SAND BAG IS DROPPED FROM IT.WHAT IS THE MAGNITUDE OF THE ACCELERATION OF THE HOT AIR BALLOON WHILE THE SANDBAG IS IN IT

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