question_answer

A rocket has an initial mass of \[20\times {{10}^{3}}\,kg\]. If it is to blast off with an initial acceleration of \[4\,m{{s}^{-2}}\], the initial thrust needed is \[(g\tilde{=}10\,m{{s}^{-2}})\]    [Kurukshetra CEE 1996]

A)                              \[6\times {{10}^{4}}\,N\]                

B)                         \[28\times {{10}^{4}}\,N\]          

C)                         \[20\times {{10}^{4}}\,N\]            

D)                           \[12\times {{10}^{4}}\,N\]