PHY2048 Lecture : answer exam 1 phy
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Travel is made strating from bakery to cafe then to the art gallery. Distance between art gallery to bakery = 2. 50 km. Distance between bakery to cafe = 4. 00 km: distance traveled : We know that distance is a scalar quantity. Therfore, the total distance traveled will be given by sum of each distance traveled. = distance between bakery and cafe + distance between cafe and art gallery. = 4. 00 km + ( 4. 00 km + 2. 50 km) Hence, the distance traveled is 10. 50 km: displacement : We know that displacement is a vector quantity. It is given by following relation: displacement = final position - initial position. Now, let the position of bakery is at origin then all the positions right of the bakery are positive while all the positions left of the bakery are negative. Then, position of cafe = + 4. 00 km and position of art gallery = - 2. 50 km.
