question_answer

A car runs along a horizontal straight road at a speed of 20 m/s. A person in it observes the rain hitting his car at 60° to the vertical. If the rain is actually falling vertically the speed of the rain drops is nearly :

A)  \[34.5\,m{{s}^{-1}}\]     

B)                         \[11.55\,m{{s}^{-1}}\]    

C)             \[10\,m{{s}^{-1}}\]        

D)         \[23.1\,m{{s}^{-1}}\]