Suppose the straight-line distance between New York and San Francisco is 4.1 106 m (neglecting the

Question:

Suppose the straight-line distance between New York and San Francisco is 4.1 × 106 m (neglecting the curvature of the earth). A UFO is flying between these two cities at a speed of 0.70c relative to the earth. What do the voyagers aboard the UFO measure for this distance?