......... m/s^2 is magnitude of acceleration of a block moving with speed 10,m/s on a rough surface

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4-2.Friction

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......... $m/s^2$ is magnitude of acceleration of a block moving with speed $10\,m/s$ on a rough surface if coefficient of friction is $0.2$.

A$2$

B$0.2$

C$0.1$

D$1$

Solution

$\left| a \right|\, = \,\mu g\, = \,0.2 \times 10\, = 2{\mkern 1mu} \,\,m/{s^2}$

Standard 11

Physics

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