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 $(g = 10\,m{s^{ - 2}})$
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 $(g = 10\,m{s^{ - 2}})$
$6 \times {10^4}\,N$
$28 \times {10^4}\,N$
$20 \times {10^4}\,N$
$12 \times {10^4}\,N$
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 $(g = 10\,m{s^{ - 2}})$
$F = m\,(g + a) = 20 \times {10^3} \times (10 + 4) = 28 \times {10^4}\,N$
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