In the first second of its flight, a rocket ejects 1 /40 of its mass with a velocity of 1200 m s−1. The acceleration of the rocket is

20 m s−2

30 m s−2

40 m s−2

60 m s−2

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In the first second of its flight, a rocket ejects 1 /40 of its mass with a velocity of 1200 m s−1. The acceleration of the rocket is

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Text solutionVerified

Let m be the mass of the object. Ejected mass of the rocket =m40 According to the law of conservation of momentum, mu1=m40u2;at=u240;a=120040×1=30ms−2 (∵u2=1200ms−1andt=1second)

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Question Text	In the first second of its flight, a rocket ejects 1 /40 of its mass with a velocity of 1200 m s−1. The acceleration of the rocket is
Answer Type	Text solution:1
Upvotes	153

In the first second of its flight, a rocket ejects 1 /40 of its mass with a velocity of 1200 m s−1. The acceleration of the rocket is

Text solutionVerified

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