Question

question 3 of 25 a runner accelerates to 8 m/s in the first 2 s out of the starting block. what is the runners rate of acceleration? a. 16 m/s² b. 0.25 m/s² c. 4 m/s² d. 8 m/s²

Explanation:

Step1: Identify acceleration formula

$a = \frac{\Delta v}{\Delta t}$

Step2: Determine Δv and Δt

$\Delta v = 8\ \text{m/s} - 0\ \text{m/s} = 8\ \text{m/s}$, $\Delta t = 2\ \text{s}$

Step3: Calculate acceleration

$a = \frac{8}{2} = 4\ \text{m/s}^2$

Answer:

C. 4 m/s²