A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on th

[answerhappygod]

A fisherman notices that his boat is moving up and down
periodically without any horizontal motion, owing to waves on the
surface of the water. It takes a time of 3.00 ss for the
boat to travel from its highest point to its lowest, a total
distance of 0.600 mm . The fisherman sees that the wave
crests are spaced a horizontal distance of
6.20 mm apart.
How fast are the waves travelling?
What is the amplitude "A" of each wave?
Express your answers in three significant figures.