Hey I’m sorry but I do not know the answer.
KE = 1/2(m * v^2)
KE = 1/2(1350 * 12^2)
KE = 1/2(1350 * 144)
KE = 1/2(194,400)
KE = 97,200 Joules
Uhm, did you, maybe, type in the problem wrong? The answer to this equation is: 18/5 or 3.6, lol, no worries, though!
Just in case:
This slope goes through (0,0) or more formally, the origin.
2(4+39) = 39 + 4 = 43
43 x 2 = 86