A stone falls from a ballon that id descending at a uniform rate of 12m/s. The displacement of the stone from the point of release after 10 sec is

Options

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

Answer

C

Explanation

`u= 12 m//s , g= 9.8 m//sec ^(2) ,t= 10 sec `
Displacement ` = ut+(1)/(2) gt^(2) : = 12 xx 10 + (1)/(2) xx 9.8 xx 100 = 610m. `