A body  is projected  up along  a  rough inclined  plane of  inclination  `  45 ^@ ` .
Channel: Doubtnut
Date: 2020-05-17

A body  is projected  up along  a  rough inclined  plane of  inclination  `  45 ^@ ` .  The  coefficient  of  friction  is  0.5. Then  the  retardation  of  the  block  is