The answer is 60 km. I hope it helps i dont know if this is right or wrong.
The amplitude of wave-c is 1 meter.
The speed of all of the waves is (12meters/2sec)= 6 m/s.
The period of wave-a is 1/2 second.
I believe the answer is A
Answer:
1. <--> A.
2. <--> C.
3. <--> D
4. <--> B.
explanation: i know my science!
Answer:
(C) Average Velocity = 25 m/s due North