1.

A rocket is fired and ascends with constant vertical acceleration of `10 m//s^(2)` for 1 minute. Its fuel is exhausted and it continues as a free particle. The maximum altitude reached is `(g=10 m//s^(2))`A. 18 kmB. 36 kmC. 72 kmD. 108 km

Answer» Correct Answer - B
`h=(1)/(2)at^(2),v=at` max.height`=H=(v^(2))/(2g)`
Total distance from the ground`=(H+h)`
`=(1)/(2)at^(2)(1+(a)/(g))`


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