Scenario: Vehicle A, ’04 Pontiac G6, made a left turn, southbound to eastbound, from a stop and had accelerated to 12mph according to the EDR pre-crash data. Vehicle B, ’04 Toyota Solara, was northbound and collided front to the right front quarter/right passenger of vehicle A. The intersection is controlled by a traffic signal and it was green for north and southbound traffic at the time of the crash. Vehicle A’s EDR reported a delta V of 12mph. The data doesn’t specify lat. Vs long. for the delta V so I believe it to be solely long. since its forward motion was stopped. Vehicle B’s EDR reported no pre-crash data and delta V of 43.5. The curb weight of vehicle A is about 200 lbs heavier than vehicle B. The collision was 90 degrees. Post impact speed for vehicle A was calculated to be 49 mph. Vehicle B was calculated to be 31 mph but did not included speed loss due to striking a pole. FWIW witness stated vehicle B was racing another vehicle, the speed limit was 35mph. I have two primary questions:
1. Is it possible for vehicle A to have a post impact speed(49mph) greater than vehicle B’s delta V (43.5) given that A is heavier than B?
2. Can vehicle B’s delta V and its post impact speed be added or does it have to be combined?
Thank you for your time.