Asked by Sujata
                If  a  particle  is  projected  at  an  angle  of  30°  to  the  horizontal  with kinetic  energy  E  then  its  kinetic  energy  at  the  topmost  point  would be?
            
            
        Answers
                    Answered by
            Scott
            
    the horizontal velocity is the total velocity multiplied by cos(30º)
at the topmost point, there is no vertical velocity
... so the K.E. is ... E cos²(30º)
    
at the topmost point, there is no vertical velocity
... so the K.E. is ... E cos²(30º)
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