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In the first second of its flight, rocke...

In the first second of its flight, rocket ejects 1/60 of its mass with a velocity of `2400 ms^(-1)`. The acceleration of the rocket is

A

`19.6 ms^(-2)`

B

`30.2 ms^(-2)`

C

`40 ms^(-2)`

D

`49.8 ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
C
mv = constant
`rArr m (dv)/(dt) - v(dm)/(dt) = 0`
`rArr a = (dv)/(dt) = (1)/(1)[(1)/(60)] xx 2400 = 40 m//s^(2)`
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