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Physics - NLM Question with Solution | TestHub

PhysicsNLMMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A shell of mass 10 kg is moving with a velocity of ${10 m s}^{- 1}$ when it blasts and forms two parts of mass 9 kg and 1 kg respectively. If the 1st mass is stationary, the velocity of the 2nd is

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Answer:

Solution:

$G i v e n t h a t,$

$v_{1} = 10 {m s}^{- 1}; m_{1} = 10 k g$

$v_{2} = 0; m_{2} = 9 k g$

$v_{3} = v; m_{3} = 1 k g$

According to conservation of momentum

$m_{1} v_{1} = m_{2} v_{2} + m_{3} v_{3}$

$10 \times 10 = 9 \times 0 + 1 \times v ⟹ v = 100 {m s}^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:NLMSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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