• # question_answer A rocket with a lift-off mass $3.5\times {{10}^{4}}$ kg is blasted   upwards   with   an   initial acceleration of $10\,m/{{s}^{2}}$ . Then, the initial thrust of the blast is                                    [AIEEE 2003] A) $3.5\times {{10}^{5}}$ N B) $7.0\times {{10}^{5}}$ N C) $14.0\times {{10}^{5}}$ N D) $1.75\times {{10}^{5}}$ N

 [a] Here, thrust force is responsible to accelerate the rocket, so initial thrust of the blast $=ma=3.5\times {{10}^{4}}\times 10$ $=3.5\times {{10}^{5}}N$