Question

What would the acceleration of a car be from a stoplight if it started at 0 m/s and reached a

Answer 1

Answer:

The acceleration of a car would be:  $a=12.8$ m/s²

Explanation:

Given

Initial velocity = $v_1=0$ m/s

Final velocity = $v_f=100$ m/s

Time elapsed = $t = 7.8$ s

To determine

We need to determine the acceleration of a car.

We know that acceleration is basically the rate of change in velocity over time.

Thus,

We can determine the acceleration using the formula

$\:\:\:a=\:\frac{v_f-v_i}{t}$

where

• $a$ is the acceleration

• $v_1$ is the initial velocity

• $v_f$ is the final velocity

• $t$ is time elapsed

now substituting the values $v_1=0$,  $v_f=100$, and $t = 7.8$ in the formula

$\:\:\:a=\:\frac{v_f-v_i}{t}$

$a=\:\frac{100-0}{7.8}$

$a=\frac{100}{7.8}$

$a=12.8$ m/s²

Therefore, the acceleration of a car would be:  $a=12.8$ m/s²