Question

Chetra was driving a car when he realized that it was close to the turn to enter the house He slowed down his car from 190m / S to 12m / s for 20s Calculate the acceleration of his car.

Answer 1

ANSWER:

$-8.9\frac{m}{s^2}$

STEP-BY-STEP EXPLANATION:

Given:

Final Speed: 190 m/s

Initial Speed: 12 m/s

Time: 20 sec

The acceleration can be calculated using the following formula:

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

Substituting the values and we calculate the acceleration, just like this:

$\begin{gathered} a=\frac{12-190}{20-0} \\ a=-8.9\frac{m}{s^2} \end{gathered}$

The acceleration is -8.9 meters per second squared.