Final answer:
The acceleration of the rooster, which starts from rest and achieves a velocity of 15 m/s in 9 seconds, is calculated using the formula for average acceleration: a = (Vf - Vi) / t, resulting in an acceleration of 1.67 m/s².
Step-by-step explanation:
The student's question is related to calculating the acceleration of a rooster that begins at rest and reaches a speed of 15 m/s in 9 seconds. Acceleration is defined as the rate of change of velocity per unit of time. To find the acceleration, the following simple formula can be used:
Acceleration Calculation
- Identify the initial velocity (Vi), which in this case is 0 m/s as the rooster starts at rest.
- Identify the final velocity (Vf), which is given as 15 m/s.
- Identify the time (t) over which the acceleration occurs, which is 9 seconds.
- Use the formula for average acceleration (ā) which is ā = (Vf - Vi) / t.
- Substitute the known values into the formula to get the acceleration. Specifically, ā = (15 m/s - 0 m/s) / 9 s = 1.67 m/s².
Thus, the rooster's average acceleration is 1.67 m/s².