A balloonist release a ballast bag from a balloon rising at 40 ms at a time when the balloon is 100 m above the ground. If g = 10m/s2 then the bag reaches the ground in:

A balloonist release a ballast bag from a balloon rising at 40 ms at a

1.	A balloonist release a ballast bag from a balloon rising at 40 ms at a time when the balloon is 100 m above the ground. If g = 10m/s2 then the bag reaches the ground in:
Answer» `16 s^(-1)` 18 s 10 s 20 s Solution :Here 100=`40T+(1)/(2)xx10xxt^(2)` or `t^(2)-8t-20=0` or `t=(8pmsqrt(64+80))/(2)=(8+12)/(2)=10S `

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A balloonist release a ballast bag from a balloon rising at 40 ms at a time when the balloon is 100 m above the ground. If g = 10m/s2 then the bag reaches the ground in:

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