A body of mass 3 kgfall freely from the buildingof height60 m . Its kinetic energy after 3s will be………

A body of mass 3 kgfall freely from the buildingof height60 m . Its ki

1.	A body of mass 3 kgfall freely from the buildingof height60 m . Its kinetic energy after 3s will be………
Answer» 557 J 246 J 1048 J 1297 J Solution :According to EQUATION of accelerated motion , ` :. V = v_(o) +"gt"= 0 +9.8 xx3` ` :. V = 29.4` m/s ` :. ` KINETIC energy after 3s ` K = 1/2 mv^(2)` ` = 1/2 xx 3xx (29.4)^(2)` ` K = 1297 J `