The second image had the background info needed to solve the practice problem. Name:G#Page 52-Practice Problem 2.12:Suppose you and the truck are both traveling in the northbound lane. (Let's assume thetruck has recently passed you, so we don't need to worry about a collision) If wecontinue to let north be the positive direction, (a) what is the truck's velocity relative toyou and (b) what is your velocity with respect to the truck? Answer: (a) +16km/h, (b)-16km/h. atTright side: For a point P relative to frames A and B, P/A = (P)B)(Drule to use when you apply Equation 2.16. If there are three different frames of refer-ence, A, B, and C, we can write immediatelyUP/A= UP/C + UC/B + UB/A.and so on.EXAMPLE 2.12 Relative velocity on the highwayIn this example we will solve a relative motion problem involving only two frames of reference. Supposeyou are driving north on a straight two-lane road at a constant 88 km/h (Figure 2.30). A truck traveling at aconstant 104 km/h approaches you (in the other lane, fortunately). (a) What is the truck's velocity relativeto you? (b) What is your velocity with respect to the truck?SOLUTIONSET UP Let you be Y, the truck be T, and the earth be E, and let thepositive direction be north (Figure 2.30). Then UY/E = +88 km/h.SOLVE Part (a): The truck is approaching you, so it must be mov-ing south, giving UT/E= -104 km/h. We want to find UT/Y. ModifyingEquation 2.16, we haveUT/E = UT/Y + UY/E>UT/Y UT/E UY/E= -104 km/h - 88 km/h = -192 km/h.The truck is moving at 192 km/h south relative to you.Part (b): From Equation 2.17,Uy/T = -UT/Y = -(-192 km/h) = +192 km/h.You are moving 192 km/h north relative to the truck.REFLECT How do the relative velocities change after you and thetruck have passed? They don't change at all! The relative positions ofthe objects don't matter. The velocity of the truck relative to you is still-192 km/h, but it is now moving away from you instead of toward you.Practice Problem: Suppose you and the truck are both traveling in thenorthbound lane. (Let's assume the truck has recently passed you, soEUT/EW-EÜY/EYVideo Tutor Solution||||A FIGURE 2.30 Velocities of you and the truck, relative to the ground.we don't need to worry about a collision.) If we continue to let north bethe positive direction, (a) what is the truck's velocity relative to you and(b) what is your velocity with respect to the truck? Answers:(a) +16 km/h, (b)-16 km/h.

Name: The second image had the background info needed to solve the practice
Uploaded: 2024-03-20T06:57:47.000Z
Channel: Bartleby
Description: The second image had the background info needed to solve the practice problem. Name:G#Page 52-Practice Problem 2.12:Suppose you and the truck are both traveling in the northbound lane. (Let's assume thetruck has recently passed you, so we don't need