Question

a roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds. whats the acceleration? 16 m/s² 24 m/s² 18 m/s² 16 m/s

Explanation:

Step1: Recall acceleration formula

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

Step2: Identify given values

We have $v = 70\ m/s$, $u = 6.0\ m/s$, and $t = 4\ s$.

Step3: Substitute values into formula

$a=\frac{70 - 6}{4}=\frac{64}{4}=16\ m/s^{2}$

Answer:

$16\ m/s^{2}$