Question

question 4 (3 points)
(02.04 mc)
a velocity - time graph is shown below.
what is the average acceleration of the object represented in the graph above over the 10 seconds?
a 0 m/s²
b 2 m/s²
c 4 m/s²
d 6 m/s²

Explanation:

Step1: Identify initial and final velocity

Initial velocity $v_0 = 0$ m/s (at $t = 0$ s), final velocity $v = 10$ m/s (at $t=5$ s and remains constant till $t = 10$ s).

Step2: Use acceleration formula

The formula for average acceleration $a=\frac{v - v_0}{t}$. Here, $v = 10$ m/s, $v_0=0$ m/s and $t = 5$ s (as acceleration occurs in first 5 s). So $a=\frac{10 - 0}{5}=2$ m/s².

Answer:

B. $2$ m/s²