A block of mass 5kg slide down an inclined plane that has an angle of 10• if the inclined plane has no friction and the block start at a height of 0.8m, how much kinetic energy does the block have when it reaches the bottom? Acceleration due to gravity is g=9.8m/s^2

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination. at the turning point, how far is the second student from the destination?