Answer:20.1m/s
Explanation:
Do you have a picture of the diagram?
<u><em>PRIMARY </em></u>Waves Are Detected First Because They Move So Fast.
<u><em>RIGHT</em></u> Angles To The Direction of Movement.
A Kind Of Scale Used To Measure The Amount of Seismic Energy Released By An Earthquake <u><em>RICHTER SCALE</em></u>
Answer:
90cm
2x5=10
10x9=90
