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$\cdot$ In Figure $2-27,$ you walk from the park to your friend's house,then back to your house. What are your (a) distance traveled, and(b) displacement?

(a)Distance Traveled: 2.65 $\mathrm{mi}$Total Displacement: $-0.75 \mathrm{mi}$(b)The Answer is $[-0.75$ mi

Physics 101 Mechanics

Chapter 2

One-Dimensional Kinematics

Motion Along a Straight Line

Rutgers, The State University of New Jersey

University of Michigan - Ann Arbor

University of Winnipeg

McMaster University

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Okay, so in problem, too, we have to calculate the distance and the displacement. We're still using the same figure off the problem one. But the difference now is that if the problem gives us and well, it was a centre problem, one distance is how much ground you cover while in motion. And displacement is the change in your position when you compare final position. If your initial position and is really important to know that your initial position is always zero off your coordinate system, okay, so you can have negative distance. You're going to see this. You're going to see that when you're so the problem. Well, we have the distance between the park in the house. Judo 0.75 miles. Distance between library and park, zero point six miles. Distance between friends House and library off 0.35 Myers. Well, Robin gives us now a path that we go from the park through our friend's house into the friend's house, our house again. Well, the distance I just said. It's just how much grown your cover. Then we have 0.6 from Proctor Library. Bless zero point 35 the library to friend's house, plus Friend's house to house. Ah, this is zero point five was zero point six of us, you know, point serving five. Myers. This is equal to two point 65 miles. Okay, then what is the displacement? Displace monies, the initial point and the final point? As you can see, we don't go forward. We go backwards. So if you go backwards from our initial point or displacement is negative, Dan, what is the displacement? Place and meant is a co two minors. 0.75 Myers, the miner signed. It's because we go backwards for any show points and known forwards or initial points. That's problem one. Thanks for watching.

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