A 2.0kg wood block is launched up a wooden ramp that is inclined at a 32 degree angle Initial speed of the block is 8 m/s and the coefficient of kinetic friction is 0.2. a) what height does the block reach above its starting point? b) What speed does it have when it slides back down to its starting point? We have to do this without the Work-Energy Thorem Only using Forces For part a, I summed the forces in both the x and y direction and solved for the acceleration. I then plugged the acceleration into the V2= Vi2 + 2 a y equation, assuming final velocity was 0, but my answer was still wrong. Sum of Fx forces: -fk - mgsintheta = ma Sum of Fy forces: N - mgcostheta = 0 What am I doing wrong? Please answer. Am I supposed to find t first?