What are the magnitude and sign of displacements for the motions of the subway train shown in parts (a) and (b) of Figure 2.18?

Data given in Figure 2.18

Strategy
A drawing with a coordinate system is already provided, so we don’t need to make a sketch, but we should analyze it to make sure we understand what it is showing. Pay particular attention to the coordinate system. To find displacement, we use the equation Δx = x_f = x₀. This is straightforward since the initial and final positions are given.

Transcribed Image Text:

y 0 (b) Ax 2.00 km ¹x = 3.75 km 1x0 = 4.70 km Ax' = -1.50 km ¹x6 = 5.25 km xf = 6.70 km x (km) -x (km)