A book of mass 2 , kg is sliding with a const | vedclass

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(A) According to Newton's First Law of Motion,an object moving with a constant velocity in a straight line will continue to do so unless acted upon by

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(A) According to Newton's First Law of Motion,an object moving with a constant velocity in a straight line will continue to do so unless acted upon by an external unbalanced force.Since the book is moving with a constant velocity of $4 \, m s^{-1}$ on a frictionless surface,its acceleration is zero $(a = 0)$.Using Newton's Second Law,$F = m 	imes a$,where $m = 2 \, kg$ and $a = 0$.Therefore,$F = 2 \, kg 	imes 0 \, m s^{-2} = 0 \, N$.Thus,zero force is required to maintain the same velocity.

$A$ book of mass $2 \, kg$ is sliding with a constant velocity of $4 \, m s^{-1}$ on a frictionless horizontal table. What is the force required to keep the object moving with the same velocity (in $, N$)?

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