1. The problem statement, all variables and given/known data A 1609 kg car has a speed of 11.9 m/s when it hits a tree. The tree doesn't move and the car comes to rest. Find the change in kinetic energy of the car. Answer in units of J. 2. Relevant equations KE=1/2mv^2 3. The attempt at a solution Okay so like Im not completely sure where to go here... I started out in finding the kinetic energy KE=1/2(1609)(11.9)^2=113925.245 Any help would be super awesome.