A block of mass 2kg moves under the influence of external forces on a rough horizontal surface. At some instant, it has a velocity of 1 m/sec. due south and acceleration of 1 m/sec2 due east. The force of friction acting on it is F.
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a
F acts due west
b
F acts due north
c
F acts in the south-west direction
d
The magnitude of F can not be found from the given data.
answer is B.
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Detailed Solution
Kinetic friction acts opposite to relative velocity w.r.t. contact surface.