<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation
Our Terms of Use (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use.

Average Velocity

Displacement divided by time.

Atoms Practice
Estimated28 minsto complete
Practice Average Velocity
Estimated28 minsto complete
Practice Now
Turn In
Average Velocity

Students will learn the meaning of speed, velocity and average velocity.

Key Equations

Speed = distance/time

Average Velocity

\begin{align*}v_{avg} & = \frac{\boldsymbol{\Delta} x}{\Delta t} \\ \end{align*}

Speed is the distance traveled divided by the time it took to travel that distance. Velocity is the instantaneous speed and direction. Average velocity is the displacement divided by the time.

Example 1

Pacific loggerhead sea turtles migrate over 7,500 miles (12,000 km) between nesting beaches in Japan and feeding grounds off the coast of Mexico. If the average speed of a loggerhead is about 45 km/day, how long does it take for it to complete the distance of a one-way migration?

Question: \begin{align*}t = ?\end{align*} [days]

Given: \begin{align*}d = 12,000 \ km\end{align*}

\begin{align*}{\;} \qquad v_{avg} = 45 \ km/day\end{align*}

Equation: \begin{align*}v_{avg} = \frac{d}{t}\end{align*} therefore \begin{align*}t = \frac{d}{v_{avg}}\end{align*}

Plug n’ Chug: \begin{align*}t = \frac{d}{v_{avg}} = \frac{12,000 \ km}{45 \ km/day} = 267 \ days\end{align*}

Answer: \begin{align*}\boxed{\mathbf{267 \ days}}\end{align*}

Time for Practice

  1. You drive the 10 miles to work at an average speed of 40 mph. On the way home you hit severe traffic and drive at an average speed of 10 mph. What is your average speed for the trip?

Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Please to create your own Highlights / Notes
Show More

Image Attributions

Explore More

Sign in to explore more, including practice questions and solutions for Average Velocity.
Please wait...
Please wait...