If the go-return time doubles, the depth ______.

If the go-return time doubles, the depth ______.

• A. Depth doubles
• B. Depth remains the same
• C. Depth halves
• D. Depth triples

Answer: (A)

Depth is determined by how long a go-return signal takes to travel to the bottom and back, assuming the speed of the signal stays constant. The relationship is t = 2d / v, so d = (v t) / 2. If the go-return time doubles while speed remains the same, depth must double. Therefore, the depth doubles.

Depth is determined by how long a go-return signal takes to travel to the bottom and back, assuming the speed of the signal stays constant. The relationship is t = 2d / v, so d = (v t) / 2. If the go-return time doubles while speed remains the same, depth must double. Therefore, the depth doubles.