Question

What is the speed of a wave if the wavelength is 50 meters and the period is 10 seconds?

Answer 1

Based on the information you provided, this means the wave is traveling 50 meters every ten seconds. Meaning it is traveling 50/10 meters per second.
When you simplify you get 5 meters per second.

Answer 2

Speed = Distance x Time

50 x 10 = 500 m/s