Speed+and+Velocity

Speed and Velocity



__Facts and Definitions__ Speed is the rate at which an object moves. Velocity is the description of speed in a given direction.

The formula for speed is: Speed= distance/time

Units for speed and velocity are: speed: meters per second- m/s, time: seconds- s, distance: meters- m.

Average Speed is the total distance you travel divided by the total time it takes to get to the ending point.

Velocity is the speed and the direction an object goes.

Velocity changes when you change speed **__or__** direction.

__Questions__ What is the speed of a cheetah that tavels a total of 112.0 meters in 4.0 second?

S= d/t 112.0 m/4.0 s= 28 m/s

A snail can move about 0.30 meters per minute. How many meters can the snail travel in 15 minutes?

Distance= speed x time Time= 15 minutes Speed= .30 m/m

.3 meters x 15 minutes= 4.5 meters

__Sources__ Motion Notes From Class Skill Sheet: Speed Problems