Laws Of Motion Question 330

Question: A block B is pushed momentarily along a horizontal surface with an initial velocity V. If p is the coefficient of sliding friction between Band the surface, block B will come to rest after a time

Options:

A) gμV

B) gV

C) Vg

D) Vg(μ)

Show Answer

Answer:

Correct Answer: D

Solution:

[d] Friction is the retarding force for the block

F=ma=μR=μmg

Therefore, from the first equation of motion v=uat

0=Vμg×tVμg=t



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