Question

qe 21. directions
drag and drop the correct answer choice to each answer blank.
a jet airplane starts from rest and accelerates to 100 meters per second over a period of 5 seconds. what is the airplanes acceleration?
drag the number answer into the first blank, and then the correct units into the second blank.

Explanation:

Step1: Recall acceleration formula

Acceleration $a=\frac{v - u}{t}$, where $v$ is final - velocity, $u$ is initial - velocity and $t$ is time.
Given $u = 0\ m/s$ (starts from rest), $v=100\ m/s$ and $t = 5\ s$.

Step2: Substitute values into formula

$a=\frac{100 - 0}{5}=\frac{100}{5}=20\ m/s^{2}$

Answer:

20, $\frac{m}{s^{2}}$