1. The problem statement, all variables and given/known data A train which weighs 1.4406E4N hit a car with a mass of1470kg. The cars skids 15m at angle of 68° to the crossing and the coefficient of friction between the tyres and the road is 0.25. Find the initial velocity of the car entering the crossing. 2. Relevant equations Gravitational force = Mass×Gravity Normal Force = Gravitational force Friction force = Coefficient of friction ×normal force F=ma Vector component equations... 3. The attempt at a solution I got the acceleration to be -2.45m/s^2 and I was thinking of finding the vertical (north) component of the system using trigonometry which may corespond to the car's velocity but I was wondering what eqution I should use to translate the north compotent into the initial velocity. Still I am unsure if that is even right because the north component directly coresponds to the car's frictional force. Note that I divided the frictional force by the mass to find the acceleration.