A block of mass 5 kg is placed on a stab A of mass 20 kg which lies on a frictions surface as shown in
the figure. The of coefficient of static friction between the block and the si 04 and thatof kinetic friction is 0.2,if a force25 acts on the B, the acceleration of the slab will be (g=10m/s²)
A)0.4m/s²
B)0.5m/s²
C)1m/s²
D)zero
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