Question

dave left the library and walked 0.7 kilometers to a coffee shop. he then walked 0.4 kilometers in the same direction to a park. next, he turned around and walked 1.6 kilometers to the grocery store. finally, he walked 0.3 kilometers in his original direction to his apartment. assume the direction dave started walking is the positive direction. what was daves displacement? kilometers

Explanation:

Step1: Define displacements

Positive displacements: $0.7 + 0.4+0.3$; negative displacement: $1.6$.

Step2: Calculate total displacement

$D=(0.7 + 0.4+0.3)-1.6$.
$D = 1.4 - 1.6$.
$D=- 0.2$.

Answer:

$-0.2$