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A car starts from rest at time t = 0 and...

A car starts from rest at time t = 0 and it a-t graph is shown in figure. A coin is initially at rest on the floor of the car. At t = 1 s the coin begins to slip and it stops slipping at t = 3 s. The coefficient of static friction between the floor and the coin is (g = 10 m/`s^2`)

A

0.5

B

0.4

C

0.3

D

0.2

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