A police man hidden at an intersection observes a car that ignores a stop sign, crosses the intersection and continues at a constant speed. police man starts off 2.0s after the car, accelerates at 6.2m/s2 until the speed is 110Km/h ,then continues at this speed until he catches up with the car 1.4km from the intersection. How fast was the car traveling?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.