Which tools would sarah use to find an irregularly shaped objects mass and volume

It is a technique called water displacement method

Mass of an irregular object can be measured using a physical balance

Explanation:

It consists of a calibrated glass cylinder containing water.The initial level of water column is notedThe irregular object is submerged into it. The water level rises.The level of the water column is noted. The difference between the final and initial level of the water column gives the volume of the irregular object.The method used to find the volume of irregular shaped object is called the water displacement method.

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The object's initial distance above the groundthe object's initial velocity