Why does the water level in the graduated cylinder need to be at the same height as the water level in the plastic tub

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Disney, viacom and aol time warner are examples of

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2