Question

question 3 (1 point)
what is the total displacement from 2 - 4 s for the graph below.
velocity (m/s)
+10
0
-10
0 1 2 3 4 5
time (s)

a 40 m
b 20 m
c 10 m
d 30 m

Explanation:

Step1: Recall displacement - velocity relation

Displacement $d = v\times t$, where $v$ is velocity and $t$ is time.

Step2: Identify velocity and time interval

From the graph, $v = 10\ m/s$ and the time interval from $t = 2\ s$ to $t=4\ s$ is $\Delta t=4 - 2=2\ s$.

Step3: Calculate displacement

$d=v\times\Delta t = 10\times2=20\ m$

Answer:

B. 20 m