Question

vector addition quiz l - mu
you get on a moving sidewalk which is moving at 3 m/s toward the north. you walk toward the north at 5 m/s. what is your resulting velocity?
○ 8 m/s to the south
○ 7 m/s to the south
○ 7 m/s to the north
○ 2 m/s to the south
○ 2 m/s to the north
○ 8 m/s to the north

Explanation:

Step1: Define direction and velocities

Let north be positive. Moving sidewalk velocity: $v_1 = 3\ \text{m/s}$, walking velocity: $v_2 = 5\ \text{m/s}$

Step2: Sum velocities for resultant

Resultant velocity: $v_{\text{total}} = v_1 + v_2$
$v_{\text{total}} = 3 + 5 = 8\ \text{m/s}$
Direction remains north (positive value).

Answer:

8 m/s to the north