A balloon of total mass 1000 Kg float motionless over the earth's surface. If 100 kg of sand ballast are thrown over board, the balloon starts to rise with an acceleration of

A balloon of total mass 1000 Kg float motionless over the earth's surf

1.	A balloon of total mass 1000 Kg float motionless over the earth's surface. If 100 kg of sand ballast are thrown over board, the balloon starts to rise with an acceleration of
Answer» `10 m//s^(2)` `9.8 m//s^(2)` `1.09 m//s^(2)` `4.9 m//s^(2)` ANSWER :C