Question

a motorcycle is moving at a constant velocity of 15 meters/second. then it starts to accelerate and reaches a velocity of 24 meters/second in 3 seconds. whats the acceleration of the motorcycle over this time? use $a = \frac{v - u}{t}$. a. 9 m/s² b. 8 m/s² c. 6 m/s² d. 5 m/s² e. 3 m/s²

Explanation:

Step1: Identify values

Let the initial velocity $u = 15$ m/s, the final velocity $v=24$ m/s and time $t = 3$ s.

Step2: Apply acceleration formula

$a=\frac{v - u}{t}=\frac{24 - 15}{3}$
$=\frac{9}{3}=3$ m/s²

Answer:

E. 3 m/s²