Question

pls guys help me too solve these questions...​

Answer 1

A child is standing at the edge of a straight highway watching her grandparents' car driving away at a constant 21.6 m/s. The air is perfectly clear and steady, and after 11.5 minutes the car's two taillights (646 nm) appear to merge into one. Assuming the diameter of the child's pupils is 5.60 mm, calculate the width of the car.


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