The official€™s truck in Fig. 2.2 is at x₁= 277 m at t₁= 16.0 s and is at x₂= 19 m at t₂= 25.0 s.

(a) Sketch two different possible x-t graphs for the motion of the truck.

(b) Does the average velocity v_av-x during the time interval from t₁ to t₂ have the same value for both of your graphs? Why or why not?

Fig. 2.2 

Transcribed Image Text:

Position at t Position at t2 = 16.0 s 25.0 s START FINISH P1 Displacement from t¡ to tɔ X2 = 19 m x, = 277 m Ax = (x2 – x1) = -258 m This position is now x1. This position is now x2. When the truck moves in the -x-direction, Ax is negative and so is the average x-velocity: - 258 m Ax - 29 m/s V av-x Δt 9.0 s