A rocket with a lift-off mass 20,000 kg ...

A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of `5.0 m s^-2`. Calculate the initial thrust (force) of the blast.

A

`3.5 xx 10^5 N`

B

`7.0 xx 10^5 N`

C

`14.0 xx 10^5 N`

D

`1.75 xx 10^5 N`

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