A block of negligible size and a mass M = 2.5 KE slides down a frictionless incline ( angle* D = 450 ) into a frictionless ramp ending at point D,...

Some please tell me how to do part c d and e. I will vote. Answers are -18, 8.2 and 18 respectively . Thanks!

P3. A block of negligible size and a mass M = 2.5 KE slides down a frictionless incline ( angle*D = 450 ) into a frictionless ramp ending at point D, as shown in the figure . The height If of theblack's initial position ( point A ] on the incline is equal to 5.0' m . The height of the end of the ramp*at point I is equal to 0. 80 m .a. ( 4 ) Determine the speed Y, of the black at point [ at the bottom of the incline .6. (5 ) Find the speed Y of the black at point D as it leaves the ramp .We now replace section AB of the incline with a floor that has Friction ( coefficient of kinetic Friction#` = 0.15 1 . The length [ of section AB is equal to 7.0 1 .C. (5 ) Calculate the work It' done by the friction during the slide on section AB .d. (7 ) Determine the new the speed "' of the black at point D as it leaves the rampe. ( 4) Calculate the amount of thermal energy E generated .IA