Vocabulary Distance Velocity Speed Average Speed Displacement Acceleration Scalar Vector

Distance & Displacement Page 3 in your comp book

Displacement vs. Distance the COMPLETE length of the PATH traveled by a moving object DISPLACEMENT the length of the STRAIGHT LINE PATH from a moving object’s ORIGIN to its FINAL POSITION

Scalar vs. Vector SCALAR VECTOR A measured quantity that has NO DIRECTION Examples Distance, Time, Mass, Volume VECTOR A measured quantity that HAS DIRECTION SIGN SHOWS DIRECTION Example Displacement

One more thing… What is the Pythagorean Theorem? A2 + B2 = C2

Examples A bird flies 5 meters north, then 7 meters south Sign of displacement refers to the direction the object is moving . A bird flies 5 meters north, then 7 meters south Distance = Displacement = A ball rolls 5 meters north. Distance = Displacement = A cat runs 8 meters west. Distance = Displacement = 5 m 12 m 8 m +5 m -2 m -8 m

Example A man drives his car 3 miles north, then 4 miles east. Distance 7 mi 3 mi North Displacement 5 mi Northeast What distance did he travel? What is his displacement from his point of origin?

Brain Break Vector

Velocity vs. Speed VELOCITY SPEED change in DISPLACEMENT occurring over TIME MAGNITUDE and DIRECTION VECTOR SPEED change in DISTANCE occurring over TIME MAGNITUDE ONLY SCALAR

How to work a problem G – given U – Unknown E – Equation S – Substitute S - Solve

Question 1 What is the speed of a cheetah that travels 112m in 4s? G- U- E- S- S-

Graphing Speed & Velocity

What does this remind you of? What is happening in this Average Velocity What does this remind you of? SLOPE OF A GRAPH! What is happening in this graph? INCREASING SLOPE Moving with CONSTANT positive velocity Moving with INCREASING velocity Motionless Object CONSTANT POSITIVE SLOPE CONSTANT ZERO SLOPE