You are given two transverse waves on a

Question

string: f1(x) and f2(x) moving toward each
other. At an initial time, the wave f1(x) (lying
between 0 and 5 m) moves to the right at
v1 = +1 m/s and f2(x) (lying between 5 and
10 m) is moving to the left at v2 = −1 m/s.

Answer 1

What is the speed of the wave after the two
waves have interacted?

The speed of the wave after the two waves have interacted is 0 m/s.