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What is the average speed of the ball between 3 and 4 seconds?

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The diagram shows a uniformly accelerating ball. The position of the ball each second is indicated.

What is the average speed of the ball between 3 and 4 seconds? 

 (A) 3.0 cm/s 

(B) 7.0 cm/s 

(C) 3.5 cm/s 

(D) 12.5 cm/s 

(E) 4.0 cm/s

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1 Answer

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Best answer

Correct option (B) 7.0cm/s

Average speed = total distance divided by total time = (7cm)/(1s)

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