1. Distance vs. Displacement

2. Distance: the length of a path Ex: You walk 50 m East from physics to Mrs. York’s class but you find you forgot your agenda in physics so you walk back to retrieve it. 50m E Total distance? 50m + 50m= 100m 50m W Physics Mrs. York’s

3. Physics A straight arrow from start to finish: A straight arrow from start to finish: “As a crow flies” “As a crow flies” Make sure you have direction with answer. Make sure you have direction with answer. Displacement 50m E 0m 50m W Start and stopping point are the same so displacement = N W S E Mrs. York’s

4. Distance: the length of a path Ex: A pigeon runs 75 m east along Harding’s rooftop. It takes a break and then runs 47 m south. The pigeon then runs 75m west. Total distance? 75 + 47 + 75= 197m 47m S 75m E 75m W

5. Displacement: from start to finish Ex: A pigeon runs 75 m east along Harding’s rooftop. It takes a break and then runs 47 m south. The pigeon then runs 75m west. 75m E Displacement? 47m S 75m W Draw your displacement line from tail to tip! 47m S 75m E 75m W ?

6. Distance: the length of a path 2km S Ex: A hippopotamus swims 2 km south in the river, walks 1 km west then proceeds 1 km north. 1km W 1km N Total distance?2km + 1km +1km = 4km

7. Displacement 2km S Make sure your answer has a direction. Make sure your answer has a direction. 1km W 1km N Total displacement? Use Geometry!

8. Displacement 2km S 1km W 1km N ? ? ? 1km

9. Displacement ? 1.41km SW How do you find the hypotenuse of a right triangle? a 2 + b 2 = c 2 1 2 + 1 2 = c 2 1 + 1 = c 2 √2 = c