You are running a race and you speed up from 3 m/s to 5 m/s in 4 seconds.
a. What is your change in speed?
b. What is your acceleration?
To find the change in speed, you subtract the initial speed from the final speed:
Change in speed = Final speed - Initial speed
In this case, the initial speed is 3 m/s and the final speed is 5 m/s.
Change in speed = 5 m/s - 3 m/s = 2 m/s
Therefore, the change in speed is 2 m/s.
To find the acceleration, you use the formula:
Acceleration = Change in speed / Time taken
In this case, the change in speed is 2 m/s, and the time taken is 4 seconds.
Acceleration = 2 m/s / 4 s = 0.5 m/s²
Therefore, the acceleration is 0.5 m/s².