Physics, 18.10.2019 17:30 Andychulo7809
Q5.77: a hot-air balloon of mass 650 kg is descending vertically with downward acceleration of magnitude 2.75 m/s 2. how much mass (ballast) must be thrown out to give the balloon an upward acceleration of magnitude 2.75 m/s 2? assume that the upward force from the air (the lift) does not change because of the decrease in mass.
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Q5.77: a hot-air balloon of mass 650 kg is descending vertically with downward acceleration of magn...
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