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A rocket of mass 40kg has 160kg fuel. Th...

A rocket of mass `40kg` has `160kg` fuel. The exhaust velocity of the fuel is `2.0km//s`. The rate of consumption of fuel is `4kg//s`. Calculate the ultimate vertical speed gained by the rocket. `(g=10m//s^2)`

A

`2.82 kms^(-1)`

B

`4.82 kms^(-1)`

C

`3.61 kms^(-1)`

D

`5.62 kms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`mu_(0)=- g t, V=mu_(0)+u log_(e)((m_(0))/(m))`
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