A body rolls down a slope from a height of 100m It's velocity at the foot of the - Physics - Magnetism And Matter

Question

A   b o d y   r o l l s   d o w n   a   s
l o p e   f r o m   a   h e i g h t   o f
  100 m     I t ' s   v e l o c i t y   a
t   t h e   f o o t   o f   t h e   s l o
p e   20 m s - 1   W h a t     p e r c e n t a
g e   o f   i t s   i n i t i a l   p o t e n t
i a l   e n e r g y   i s     c o n v e r t e d
  i n t o   k i n e t i c   e n e r g y ?  
  [ g   =   10 m s - 2 ]

Shobhit Mittal · Accepted Answer

Dear Student,KE at the foot is K=mv22=400m2=200mPE =mgh=1000m
the percentage that convert into KE=200m1000m*100=20 percent
Regards