80 likes | 193 Views
CHAPTER 12 – MOTION AND MOMENTUM. Motion and Speed. Motion and Speed pg 326. 1. What do we know about all matter?. All matter is constantly in motion. 2. What must change for an object to be in motion?. The object’s position must change for it to be in motion
E N D
CHAPTER 12 – MOTION AND MOMENTUM Motion and Speed
Motion and Speed pg 326 • 1. What do we know about all matter? All matter is constantly in motion • 2. What must change for an object to be in motion? The object’s position must change for it to be in motion EX: * fast moving airplane * leaf swirling in the wind * a building (because Earthmoves)
Motion and Speed pg 326,327 • 3. What is changing position? When an object moves from one location to another it is changing position • 4. How do you know if an object changes position? An object changes position if it moves relative to a reference point
Motion and Speed pg 327 • 5. What is distance? the total length of the route an object travels when it moves • 6. What does your final position depend on? both the distance and direction you travel determine your final position
Motion and Speed pg 327 • 7. What is displacement? the distance between starting and ending points along with the direction in which you travel See also the example on page 327
Motion and Speed pg 327 • 8. How can you show the difference between distance and displacement? the distance between starting and ending points along with the direction in which you travel
Motion and Speed pg 328 • 9. What is speed? the distance traveled divided by the time taken to travel the distance speed = distance time in meters in meters per second in seconds s (m/s) = d (m) / t (s) s = d / t
Motion and Speed pg 328 distance: d = 100 m step 1: what do you know? • 10. Calculate the speed of a swimmer who swims 100 m in 56 s. time: t = 56 s step 2: what do you want to find? speed: s = d/t s = 100 m 56 s step 3: substitute s ≈ 1.8 m/s