two trnsparent elevator cars A and B are moving in front of each other.... car A is moving up and retarding at a1 while car b retarding at a2 person in car A drops a coin inside the car. wht is accn observd by person in car B
a) g + a2 down
b) g - a1 - a2 down
c) g - a1 + a2 down
d) none

Question

two trnsparent elevator cars A and B are moving in front of each other.... car A is moving up and retarding at a1  while car b retarding at a2   person in car A drops a coin inside the car. wht is accn observd by person in car B 
a) g + a2 down
b) g - a1 - a2 down 
c) g - a1 + a2 down
d) none

anonymous · Answer

it cant be b or c..  
    its a) g + a2 down

anonymous · Answer

is carb moving up or down?