Question: A rectangular block of mass M , with vertical faces, rolls without resistance along a smooth horizontal plane as shown. The block travels initially at

A rectangular block of mass M, with vertical faces, rolls without resistance along a smooth horizontal plane as shown. The block travels initially at speed U0. At t=0 the block is struck by a liquid jet and its speed begins to slow. Obtain an algebraic expression for the acceleration of the block for t>0. Solve the equation to determine the time at which U=0.(15 points)
Explain briefly the following words. (5 points each)
(a) continuity equation and Navier-Stokes equation; (b) Reynolds number; (c) incomplete similarity
A rectangular block of mass M , with vertical

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