2-1 Describing Motion
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2-1 Describing Motion We will be learning: 1. The difference between distance and displacement. 2. The difference between speed and velocity.
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2-1 Describing Motion. We will be learning: The difference between distance and displacement. The difference between speed and velocity. Motion. Need a frame of reference to determine motion. Distance – how far something has moved; measured in meters (m) - PowerPoint PPT Presentation
Transcript of 2-1 Describing Motion
2-1 Describing Motion
We will be learning:
1. The difference between distance and displacement.
2. The difference between speed and velocity.
Motion
Need a frame of reference to determine motion.
Distance – how far something has moved; measured in meters (m)
Displacement – how far something has moved in relation to its starting point.
Displacement
Speed
• Speed = distance (m) s=d d x s=t
time (s) t t x s=d
Average speed = total distance
total time
Used when discussing speed for trips
• Instantaneous Speed – speed you are traveling at that instant. (look at the speedometer)
Graphing Motion
• Distance on the vertical axis
• Time on the horizontal axis
• The steeper the slope the faster the movement.
Velocity
• Change in either speed or direction.
• If you are going in a circle or on a race track, you are constantly changing velocity due to the fact that you are constantly changing direction.
Homework
• 2-1 p. 46 #1, 2, 3, 5, 6, 7
