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PhysicsNLMMiscellaneousEasy2 minPYQ_2020
PhysicsEasysingle choice

A blockBis pushed momentarily along a horizontal surface with an initial velocityV. Ifμis the coefficient of sliding friction betweenBand the surface, then the blockBwill come to rest after a time

Options:

Answer:
D
Solution:

Friction is the retarding force for the block

F=ma=μR=μmg

Therefore, from the first equation of motion

v=u-at

0=V-μg×t  ⇒  Vμg=t

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:NLMSubtopic:Miscellaneous
⏱ 2mℹ️ Source: PYQ_2020

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