1.

A sledge moving over a smooth horizontal surface of ice at a velocity v_( 0) drives out on a horizontal road and comes toa halt. The sledge has a length l, mass m and friction between runner and road is mu.

Answer»

No work is done by friction to switch the siedge from iceto the road
A work of `(mu m g l)/(2)`is done against friction while sledge switches completelyon to road
the DISTANCE COVERED by the sledge on the road is `((v_(0)^(2))/( 2mu g)-l/2)`
total distance MOVED by the sledge before stopping is `((v_(0)^(2))/(2 mu g)-l/2)`

Answer :B::C::D


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