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26 January, 04:04

Rockets are able to accelerate in space because: a. they have excess fuel to burn from their initial take-off c. the force of gravity propels them b. they push exhaust in the same direction as they wish to accelerate d. they push exhaust in a direction opposite to the direction that they wish to accelerate

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  1. 26 January, 04:30
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    It would be D. A is wrong because you can't burn fuel in space, C is a stupid answer, and B is wrong because you don't push in the direction you are going (that would be like running backwards and expecting to go forward).
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