 1: I can explain how to determine if an object is in motion.  2: I can differentiate between distance and displacement.  3: I can differentiate between speed and velocity.  4: I am able to manipulate and use speed and velocity formulas to solve problems.  5: I can define acceleration.  6: I can use and manipulate the formula for acceleration to solve problems.

 Change in position in relation to a reference point or stationary object

 Distance follows the actual path  Displacement is always a straight line  =Xenia&bav=on.2,or.r_gc.r_pw.r_qf.&bv m=bv ,d.aWM&biw=1366&bih= 622&wrapid=tlif &um=1 &ie=UTF- 8&sa=X&ei=TuQzUf6yD8vryAGCm4CYAQ &ved=0CAgQ_AUoAg =Xenia&bav=on.2,or.r_gc.r_pw.r_qf.&bv m=bv ,d.aWM&biw=1366&bih= 622&wrapid=tlif &um=1 &ie=UTF- 8&sa=X&ei=TuQzUf6yD8vryAGCm4CYAQ &ved=0CAgQ_AUoAg

 Speed is the distance traveled divided by the time interval during which the motion occurred  Normally, objects do not travel at a constant speed  Average Speed - total distance total time D TS

 Will always be a distance unit / a time unit › Ex. Cars: mi./h › Jets: km/h › Snails: cm/s › Falling objects: m/s

 What is the speed of a car that travels 30 miles in 2 hours?  How long will it take a car to go 220 miles traveling 55 mph?  If a car is traveling at 35 m/hr for 6 hours, how far will it travel? D TS 15 mi/hr. 4 hours 210 miles

Phoenix Denver

Run = 1 hr Rise = 0 km Rise = 2 km Rise = 1 km Slope = Rise/Run = 1 km/1 hr = 1 km/hr Slope = Rise/Run = 0 km/1 hr = 0 km/hr Slope = Rise/Run = 2 km/1 hr = 2 km/hr

 Velocity is the speed of an object in a particular direction  Imagine two bicyclers leave the same building at the same time. The both cycle at 10km/hr for 5 minutes. Why don’t they end up at the same place?

 Same as speed, but also includes direction  Example: › A plane travels south at 540 miles/hour. › Johnny walks 1 block/ minute towards the school D TV

 The combination of two different velocities acting at the same time += -= 16 m/s 15 m/s 1 m/s 15 m/s 14 m/s 1 m/s

 Acceleration is the rate at which velocity changes over time › An object accelerates if its speed, direction, or both change  Unit: m/s 2  Average acceleration = final velocity – starting velocity time it takes to change velocity ΔV Ta

 As velocity increases, so does acceleration  As velocity decreases, so does acceleration  When direction changes, so does acceleration  When there is a constant velocity, there is no acceleration  Increasing velocity - positive acceleration  Decreasing velocity - negative acceleration- deceleration

 A roller coaster’s velocity at the top of a hill is 10m/s. Two sec later it reaches the bottom of the hill with a velocity of 26 m/s. What is the acceleration of the roller coaster?  Vf-Vo T m/s/s ΔV Ta

 Slope is the acceleration. A straight line is constant acceleration