during the final 5 seconds of a race, a cyclist increased her velocity from 4 m/s to 7 m/s. what was her…

during the final 5 seconds of a race, a cyclist increased her velocity from 4 m/s to 7 m/s. what was her average acceleration during those last 5 seconds?\n0.12 m/s²\n0.6 m/s²\n1.6 m/s²\n0.16 m/s²

during the final 5 seconds of a race, a cyclist increased her velocity from 4 m/s to 7 m/s. what was her average acceleration during those last 5 seconds?\n0.12 m/s²\n0.6 m/s²\n1.6 m/s²\n0.16 m/s²

Answer

Explanation:

Step1: Identify the formula

The formula for average acceleration is $a=\frac{v - u}{t}$, where $v$ is final velocity, $u$ is initial velocity and $t$ is time.

Step2: Assign values

Here, $u = 4\ m/s$, $v=7\ m/s$ and $t = 5\ s$.

Step3: Calculate acceleration

Substitute the values into the formula: $a=\frac{7 - 4}{5}=\frac{3}{5}= 0.6\ m/s^{2}$.

Answer:

$0.6\ m/s^{2}$