Question

HOMEWORK: A car increases velocity from 20 m/s to 60 m/s in a time of 10 seconds. What was theacceleration of the car?A. 4 m/s 2B. 40 m/s 2C. -4 m/s 2D. -40 m/s 2

Answer 1

Given:

• Initial velocity, vi = 20 m/s

,

• Final velocity, vf = 60 m/s

,

• time, t = 10 seconds

Let's find the acceleration of the car.

To find the acceleration of the car, apply the formula:

`a=(\Delta v)/(t)=(v_f-v_i)/(t)`

Plug in the values and solve for the acceleration, a.

We have:

`\begin{gathered} a=(60-20)/(10) \\ \\ a=(40)/(10) \\ \\ a=\text{ 4 m/s}^2 \end{gathered}`

Therefore, the acceleration of the car was 4 m/s².

• ANSWER:

A. 4 m/s²