Question

How do you determine the acceleration of an object?


A. Divide the change in velocity by the time interval


B. Subtract the starting velocity from the ending velocity


C. Multiply the change in velocity by the time interval


D. Determine the average velocity and divide by the distance traveled

Answer 1

Are you familiar with any basic calculus? If so, we can just look at this derivative and see what's happening with our units here..

$a = \frac{dv}{dt}$

Here it shows that acceleration is the derivative of velocity with respect to time. In other words, we can say that:

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

We can read that equation as: "acceleration is the change of velocity divided by the change in time (aka the time interval)."

If you're not familiar with calculus, we can use a simple equation of motion:

$v_f = v_i+at$

where:

vf = final velocity

vi = initial velocity

a = acceleration

t = observed time interval

We can rearrange this equation to find:

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

This is the same exact thing we wrote before!

Answer 2

Answer:the correct option is A

Explanation:

To determine the acceleration of an object, you divide the change in velocity by the time interval