Question

A stone falls from a balloon that is descending at a uniform rate of $12m{s}^{-1}$. The displacement of the stone from the point of release after 10sec is :-

• A. 490m
• B. 510m
• C. 610m
• D. 725m

Answer 1

Answer: (C)

610m

$S=12\times 10+\frac{1}{2}\times 9.8\times {10}^2=120+490=610m$