The acceleration of the motorcycle is 0.8 m/s².
Hence, Option a) 0.8 m/s² is the correct answer.
Given the data in the question;
Since the motorcycle stopped
then, initial speed; [tex]u = 0 m/s[/tex]
final speed; [tex]v = 12m/s[/tex]
time; [tex]t = 15s[/tex]
acceleration = ?
To get our acceleration, we use the first equation of motion.
This equation states that;
[tex]v = u + at[/tex]
so, we simply substitute in our given values and solve for "a"
[tex](12 m/s) = (0 m/s) + ( a * 15s )[/tex]
[tex]12 m/s = ( a * 15 s )[/tex]
[tex]a = \frac{12m/s}{15s}[/tex]
[tex]a = 0.8 m/s^2[/tex]
Therefore, the acceleration of the motorcycle is 0.8 m/s²
Option a) 0.8 m/s² is the correct answer
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