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A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms -1 . To give an initial upward acceleration of 20 ms -2 , the amount of gas ejected per second to supply the needed thrust will be (g = 1 (a) 127.5 kgs -1 (b) 187.5 kgs -1 (c) 185.5 kgs -1 (d) 137.5 kgs -1



A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms-1. To give an initial upward acceleration of 20 ms-2, the amount of gas ejected per second to supply the needed thrust will be (g = 1


        (a)    127.5 kgs-1


        (b)    187.5 kgs-1


        (c)    185.5 kgs-1


        (d)    137.5 kgs-1


Grade:upto college level

1 Answers

Simran Bhatia
348 Points
9 years ago

(b)

(b)

       

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