Current Attempt in Progress

A roller coaster $(302$ kg $)$ moves from above the ground$)$ to above the ground$).$ Two non$-$conservative forces are present: friction does $-1\mathrm{.}19{10}^{4}J$ of work on the car, and a chain mechanism does $+4\mathrm{.}28{10}^{4}J$ of work to help the car up a long climb. What is the change in the car's kinetic energy $K{E}_f-K{E}_0$ from $A$ to $B?$