Using the equation F=m•a What is the mass of a falling rock if it produces a force of 147 N? Hint: This is a free fall problem so a = 9.8m/s/s (acceleration of gravity).

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.