Formulas 

Physical Science Chapter 1

      (Unit 1 p. 3-32)

             Page 24 GPS article.

Equations for Chapter 1

Average Speed = Distance Traveled / Time Taken

Example 

What was Sue’s average speed if she traveled 300 meters in 6 minute?

 300 meters / 6 minutes=50 m/min

Distance = Average Speed(Time)

Example

How far did Tom travel if he drove his car 60 m/sec for 6 sec?

360 m = 60 m/sec (6 sec)

Time = Distance / Average Speed

Example

How long did it take Taylor to travel 140 meter driving 70 meters/sec?

 140 m / 70 m/sec=2 sec

Acceleration= Change in velocity

                   Change in time

Acc= [Ending vel.-Beginning vel.]

    [Ending time-Beginning time]

Ex. A rocket increases from 200 m/s to 800 m/s from 4 to 6 seconds into the launch.

Acc= [Ending vel.-Beginning vel.]

    [Ending time-Beginning time]

800-200  = 600 m/s =  300 m/s2

6-4          2 s

*Many times speed and velocity are used interchangeably.