Question

In: Physics

. Car A is moving east at a speed of 40 mph relative to the ground....

. Car A is moving east at a speed of 40 mph relative to the ground. a) Car B is moving west at 50 mph relative to the ground. What is the relative velocity (speed and direction) of car B as seen by an observer in car A? Of car A as seen by an observer in car B? b) Answer the same questions if car B is moving east at 30 mph relative to the ground.

Solutions

Expert Solution

a) relative velocity of car B as seen by an observer in car A =   40 + 50

                                                                                                 = 90 mph

   direction =   towards west

    Of car A as seen by an observer in car B =   40 + 50

                                                                     = 90 mph

   direction =   towards east

b)    relative velocity of car B as seen by an observer in car A =   30 - 40

                                                                                                 =   10 mph

   direction =   towards east

    Of car A as seen by an observer in car B =   40 - 30

                                                                     = 10 mph

   direction =   towards east


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