Speed is measured relative to what? 1. a frame of reference that is at rest

2. the speed of light

3. speed of another moving object

4. none of these

relationships are meaning less your heart will get broken.: (

The anwser is: wave a has a greater pitch and frequency.

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.