A rock is attached to the end of a 3.2 m long string and whirled in a circle at 25 m/s. If a force of 37.5 N caused the motion, what is the mass of the rock? *

2.7kg

3.3kg

4.8kg

7.9kg

Use the table to answer question 22 23 and 24.

The density of a liquid could be found by using

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.