Question

post - class quiz: average velocity and speed
1 multiple choice 0.5 points
using the table, what is the displacement from point a to point f?
table 2.1 position of
the car at various times
position t (s) x (m)
a 0 30
b 10 52
c 20 38
d 30 0
e 40 - 37
f 50 - 53
options: - 83 m, + 23 m, - 23 m, + 83 m

Explanation:

Step1: Recall displacement formula

Displacement $\Delta x = x_f - x_i$, where $x_f$ is final position, $x_i$ is initial position.

Step2: Identify positions from table

For Point A: $x_i = 30\ \text{m}$; For Point F: $x_f = -53\ \text{m}$

Step3: Calculate displacement

$\Delta x = -53 - 30 = -83\ \text{m}$

Answer:

-83 m