Reference Point Scalar Vector Position
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Transcript of Reference Point Scalar Vector Position
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1.Reference Point
2.Scalar3.Vector4.Position
5.Distance6.Displacement
7.Speed 8.Average Speed
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Reference Point• Def: a point that all motion will
be measured relative to the Starting Point
• This is the starting point.
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Two Types of Units• ____________:–Unit includes only objects magnitude (numerical value)
Examples:____________________• ____________:
–Unit includes magnitude and direction
Example: going 100 mph to the East
Example:_____________________________________________________
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Two Types of Units• Scalar:–Unit includes only objects magnitude (numerical value)
Example: speed, distance• Vector:
–Unit includes magnitude and direction
Example: going 100 mph to the East
Example: Velocity, acceleration, force, displacement,
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Position• Def:____________________________________________________________–Symbol =_____–Unit = _______–Scalar or Vector?
• Use the position vs time graph to calculate the speed of the bug using s=d/t_______________
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Position• Def: a point some distance and direction from my reference point–Symbol = x–Unit = meters (m)–Scalar
• Use the position vs time graph to calculate the speed of the bug using s=d/t_______________
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Distance• Def:_______________________________________________________________
• Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my distance??_______ miles to Dallas?_______miles from DallasTotal miles driven (distance)?
___________
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Distance• Def: refers to the total distance traveled
• Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my distance??_______ miles to Dallas?_______miles from DallasTotal miles driven (distance)?
___________
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Displacement• Def:_____________________________
(Δx = xfinal – xinitial)=___________ – __________
Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my displacement?–Start point = ________–End point = _________–Displacement=____________
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Displacement• Def: Refers to the change in position
(Δx = xfinal – xinitial)Finish pt – start pt
Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my displacement?–Displacement would be zero–Start point = Houston–End point = Houston
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Distance vs. Displacement
DistanceScalar or
VectorUnit:________
Formula: ____________
Used to find:
_________Symbol:_____
Displacement
Scalar or Vector
Unit:_________Formula:
_____________
Used to find: ___________
Symbol:______
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Distance vs. Displacement
DistanceScalar quantity
Unit: m, kmTotal
distance traveled
Used to find Speed
Symbol: d
Displacement
Vector quantity
Unit: m, kmΔx = xfinal –
xinitial
Used to find Velocity
Symbol: Δx
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Distance vs. Time Graphs
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Speed• Def:_______________________________________________________________–Scalar or Vector Quantity?–Unit:______________________–Slope of the distance vs. time graph
–Can be read directly off a speed vs. time graph
–Symbol:____
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Speed• Def: How fast you change position (distance traveled per unit time)–Scalar Quantity–Unit: meters per second (m/s)
–Slope of the distance vs. time graph
–Can be read directly off a speed vs. time graph
–Symbol: s
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Average Speed• Def:____________
__________________–Scalar or Vector?
–Unit: ________–Symbol: _______
What is the average speed of object in
graph?Use Rise over run__________________
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Average Speed• Def: total
distance divided by total time–Scalar quantity–Unit: m/s–Symbol: s
What is the averageSpeed?
Rise over run2m/4sec = .5
m/sec
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What is the speed of Light??• The sun is ___________km
from the Earth or _________ miles
• It takes light _____seconds to travel from the Sun to the Earth in the vacuum of outer space.
• What is the speed of light??
• S =______________
Memorize this number
!
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What is the speed of Light??• The sun is 150,000,000
km from the Earth or 93,000,000 miles
• It takes light 500 seconds to travel from the Sun to the Earth in the vacuum of outer space.
• What is the speed of light??
• S = 300,000 km/s
Memorize this number
!
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__________velocity
_________velocity
_________ velocity
Describe the motion in the
following graphs based on slope
using:“lesser”, “zero”,
“greater”
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Faster velocity
Slower velocity
NO (zer0) velocity
Describe the motion in the
following graphs based on slope
using:“lesser”, “zero”,
“greater”