Beginning from rest, a block of mass m slides down a frictionless curve. after sliding downward by h = 0.60 m, the block encounters horizontal concrete and slides to a stop. the coefficient of kinetic friction between the block and the concrete is µk = 0.30. what is the stopping distance l?

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

less than one you can't create energy

i don't understand. explain it clearly