An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.5. If its initial velocity is 2.9 m/s, how long does it take for the object to come to rest?

Decelleration caused due to friction equals
ug =0.5 kgm/s^2

now initial velocity =2.9m/s
,
apply v^2-u^2=2as
s=u^2/2a
=(2.9)^2/2*0.5
= find the ans

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