When you blink your eye, the upper lid goes from rest with your eyeopen to compl

Question

When you blink your eye, the upper lid goes from rest with your eyeopen to completely covering your eye in a time of 0.024 s. a.Estimate the distance that the top lid of your eye movesduring a blink. b.What is the acceleration of your eyelid? Assume it to beconstant. c. What is your upper eyelid's final speed as it hits thebottom eyelid?
a.Estimate the distance that the top lid of your eye movesduring a blink. b.What is the acceleration of your eyelid? Assume it to beconstant. c. What is your upper eyelid's final speed as it hits thebottom eyelid?

Explanation / Answer

(a) distance =1.5 cm (b) acceleration 0.015=1/2*a*0.0242 => a=52.1 m/s2 (c) speed =a*0.024=1.25 m/s (c) speed =a*0.024=1.25 m/s

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