1.

The deceleration experienced by a moving motorboat after its engine is cut off, is given by \[\frac{\text{dv}}{\text{dt}}\text{ = -K}{{\text{V}}^{3}}\]  where K is constant. If \[{{V}_{0}}\] is the magnitude of the velocity at cut-off, the magnitude of the velocity at a time t after the cut-off is

A. \[\frac{{{V}_{0}}}{\sqrt{\left( 2V_{0}^{2}Kt+1 \right)}}\]
B. \[{{V}_{0}}{{e}^{-Kt}}\]
C. \[{{V}_{0}}/2\] 
D. \[{{V}_{0}}\]
Answer» E.


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