A hot air balloon is rising straight up with a speed of 6.0, Ask an Expert

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Q1. A hot air balloon is rising straight up with a speed of 6.0 m/s. A ballast bag is released from rest relative to the balloon when it is 9.54 m above the ground. How much time elapses before the ballast bag hits ground?

Q2. An osprey's call is a distinct whistle at 2400 {rm Hz}. An osprey calls whilst diving at you, to drive you away from her nest. You hear the call at 2300 {rm Hz}

How fast is osprey approaching?

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