Congratulations on starting your 24-hour free trial!

Quick Homework Help

# Speed - Instantaneous Speed

Star this video

Speed refers to the rate at which an object travels. Unlike velocity, speed is a scalar quantity so direction does not matter. Instantaneous speed is the speed of an object in motion at a specific point in time. This is determined similarly to average speed, but we narrow the period of time so that it approaches zero. If an object has a standard speed over a period of time, its average and instantaneous speeds may be the same.

Letâs talk about speed. Speed is how fast an object is moving. Scientific units for speed could be, kilometers per hour or meters per second, so what weâre talking about is weâre talking about a distance over time okay? So letâs look at example how can we calculate the speed of an object okay? Well letâs say I, I can't do this by the way, but letâs say I could run 100 meters in 10 seconds, what is my speed? Okay? Well I say distance 100 meters over time 10 seconds, easy calculation there that is going to be 10 meters per second. Thatâs how you calculate speed.

## Find Videos Using Your Textbook

Enjoy 3,000 videos just like this one.