A block B of mass 5 kg is placed on a sl...

A block B of mass 5 kg is placed on a slab A of mass 20 kg which lies on a frictionless surface as shown in the figure. The coefficient of satic friction between the block and the slab is 0.4 and that of kinetic friction is 0.2. If a force F = 25N acts on B, the acceleration of the slab will be

`0.4 ms^(-2)`

`0.5 ms^(-2)`

`1ms^(-2)`

Zero

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