An investigation of an automobile crash suggests that vehicle A was moving at 52 mph toward the south and vehicle B was moving

Question

An investigation of an automobile crash suggests that vehicle A was moving at 52 mph toward the
south and vehicle B was moving at an unknown speed toward the north, when the two cars collided,
sticking together after the collision.
Vehicle A weighs 1350 lbs., and vehicle B weighs 1893 lbs. If the cars did not move significantly after
their collision, find the initial speed of vehicle B in mph.

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