Question

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____

• A. $3.5\times {10}^{5}N$
• B. $7.0\times {10}^{5}N$
• C. $14.0\times {10}^{5}N$
• D. $175\times {10}^{5}N$

Answer 1

Answer: (A)

$3.5\times {10}^{5}N$

Force$=$mass$\times$acceleration.
$F=3.5\times {10}^4\times 10=3.5\times {10}^5$N