A curveball has more than  one measureable motion. How many does it have? (ignore spin) | Flash |       3 Motions  Forward, Left (or Right), Down       Velocity - Speed in a particular direction How many velocities does this boat have?   | Flash |     C. Velocity - speed in a particular direction       [ HTML5 ] St. Mary's H.S.       Focus on the man walking across this page. Identify his 2 velocities. Which is the greater of the two? | Flash |           The answer depends on your coordinate system. The man is moving to the north (or up, forward, y) and the east (or across, to the right, x). Since his easterly displacement is greater, he has a greater easterly velocity               Ex) Joe drove 13 meters North East in 2.0 seconds What was Joes ... Northeast displacement?  displacement east? displacement north?     Northeast displacement?  13 m NE displacement east? 12 m E displacement north?  5 m N     Ex) Joe drove 13 meters North East in 2.0 seconds We can say that Joe has 3 velocities V = 6.5 m/s N.E.     V = 5 m N/2 seconds =   2.5 m/s North   V = 12 m East/2seconds = 6 m/s East       1. Velocity is always written with direction   Examples     • 5m/s east   • +5m/s   • 100 m/s downward   • -100 m/s         2. Equation:     V = ∆d/∆t     For straight line motion:   V = distance/time and direction                     ©Tony Mangiacapre., - All Rights Reserved [Home] Established 1995  Use any material on this site (w/ attribution)