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A rubber ball bounces on the ground as shown. After each bounce, the ball reaches one-half the height of the bounce before it. If the time the ball was in the air between the first and second bounce was 1 second. What would be the time between the second and third bounce?

(A) 0.50 sec 

(B) 0.71 sec 

(C) 1.0 sec 

(D) 1.4 sec 

(E) 2.0 sec

1 Answer

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Best answer

Correct option (B) 0.71 sec

Using d = ½ at2 shows the height is proportional to the time squared. ½ the maximum height is √1/2 times the time.

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