A long block A is at rest on a smooth horizontal surface. A small block B, whose mass is half of A. is placed on A at one end and projected along A with some velocity u. The coefficient of friction between the blocks is μ μ .
A
The blocks will reach a final common velocity 
B
The work done against friction is two-thirds of the initial kinetic energy of B.
C
Before the blocks reach a common velocity, the acceleration of A relative to B is 
g.
g.
D
Before the blocks reach a common velocity the acceleration of A relative to B is 
g.
g.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, d)
Force of friction acts opposite to the direction of motion or tendency of motion.
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