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A small block slide along a path that is...

A small block slide along a path that is without friction until the block reaches the section l=3m, which begains at height h=3m on a flat incline of angle 37° , as shown. In that section, the coefficient of kinetic friction is 0.50. The block passes through point A with a speed of `sqrt(136)`m/s. Find the speed of the block as it passes through point B where the friction ends, in m/s .(take g=10m/`s^(2)`)

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