In 1986, four high school students built an electric car that could reach a speed of 106 km/h. The mass of the car was just 60.0 kg. Imagine two of these cars performing in a stunt show. One car travels east with a speed of 106.0 km/h and the other travels west with a speed of 75.0 km/h. If each car is driven by a person with mass of 50.0 kg, how much kinetic energy is dissipated in a head on, perfectly inelastic collision?
I used these three equations:
The Attempt at a Solution
I've tried many attempts, but I think this one is most relevant...
I think that I used all the right equations, but the answer is wrong. Any help is most appreciated. Thanks.