Arock falls 180 m from a cliff into the ocean. How long is it in free fall? height =∆y = 1/2 g t2
or t = √ "2H" /

What does the term discrediting mean?

Can someone explain to me how to do this problem ?

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.