Solution of task 7.3.7 from the collection of Kepe OE

Solution of task 7.3.7 from the collection of Kepe OE

7.3.7
How many seconds does the engine have to work, which gives the rocket an acceleration of 3g, so that the speed of the rocket in straight-line traffic increases from 3 to 5 km / s? (Response 68.0)

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