With what speed does a freely falling body dropped from a height of 88.2 m hit the ground? How long does the body take to fall this distance?

When seismic waves hit a fault, the waves are reflected off the fault. seismograph can detect these reflected seismic waves. geologists then use these data to map the fault's length and depth

Ithink it’s: light bounce if off a mirror

Answershe should not have multiplied the sulfur atoms by the subscript 4