Vocabulary Quiz- (1D Motion) Wednesday

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Vocabulary Quiz- (1D Motion) Wednesday
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Vector vs Scalar

• Most of the quantities used to describe motion
  can be categorized as either vectors or scalars.

• A vector is described by magnitude (size) and
  direction
• Example.. Where is Big Spring? 40 mi, East
• A scalar is described by magnitude (size) only
• ExampleHow fast is the speed limit? 70 mph

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Review

• A quantity that is ignorant of direction is
  referred to as a _________________.
• a. scalar quantity b. vector quantity
• 3. A quantity that is conscious of direction is
  referred to as a _________________.
• a. scalar quantity b. vector quantity

• a. scalar quantity
• B. vector quantity

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In which movie have you heard the word Vector?

• http//www.youtube.com/watch?vGKQdkS0qG3g

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Distance vs- Displacement

• I. Distance and Displacement
• 1) Distance and displacement are similar but
  different
• a) Distance is a scalar quantity which
  refers to the amount of ground an object has
  covered" during its motion.
• b) Displacement is a vector quantity
  which refers to the overall change in position
  of the object from start to finish. You can
  think of it as the distance the shortest
  distance that the crow flies.

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What is the cars distance, what is the cars
displacement?

• The car covered a distance of 25 km
• and a displacement of 10 km, East

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What distance did Tim travel? What was Tims
displacment?

• Tim covered a distance of (3m 4m) 5 m
• and a displacement of 5 m, NE

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What is the distance the physics student
travelled? What is their displacement?

• Example- A physics student walks 4 meters
  East, 2 meters South, 4 meters West, and finally
  2 meters North.
• The student covered a distance of 12 m
  (4m 2m 4m 2 m) 12 meters
• and has a displacement of O m

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Distance vs- Displacement

• A football coach paces back and forth along
  the sidelines- the coach moves from position A to
  B to C to D. What is his distance covered and
  displacement?
• The coach covers a distance of (35 yds 20 yds
  40 yds) 95 yards
• and has a displacement of 55 yards, left.

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Review

• What is the distance and the displacement of the
  race car drivers in the Indy 500?
• The displacement of the cars is somewhere near
  0 miles since they virtually finish where they
  started. Yet the successful cars have covered a
  distance of 500 miles.

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Review

• Scalar
• Scalar
• Vector

• Is speed a vector or scalar?
• Is distance a vector or scalar?
• Is displacement a vector or scalar?