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Vectors

Quick practice

Question 1 of 5

A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with acceleration a?

A

\frac{ m a}{g-a}

B

\frac{2 m a}{g+a}

C

\frac{2 m a}{g-a}

D

\frac{ m a}{g+a}

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