Question

Karen and Randy are playing with a toy car and track. They set up the track on the floor as shown in the figure below, where the apparatus on the far left is used to launch the car forward by pressing down on the top portion. After the car is launched, it follows the track and continues, leaving the track at an angle of θ = 27.7° with respect to the floor, at a height of h = 0.38 m above the floor. If the car has a mass of 136 g and it leaves the track with a speed of v = 3.30 m/s, what is the maximum height reached by the car, relative to the floor? Use conservation of energy to solve this problem. Ignore the effects of friction and air resistance.

I got 0.408 and it's not correct. I'm not sure what I'm doing wrong

Answer 1