All physics quantities fall into one of two categories:Scalar – a quantity that can be described with a singlenumber (size...
Vector – a quantity that includes a number and adirection.      Ex – I drove 10 miles south.      This quantity is known a...
Which person traveled the greatest distance?Which person had the greatest displacement?
Vectors are represented by an arrow      - the length represents the size or magnitude      - the angle represents the dir...
Vector AdditionResultant: the term given for the final sum vector whenadding 2 or more vectors together Question: 4 cm + 5...
I walk 3 blocks south, 4 blocks east and3 blocks north.a)What is my distance convered?b)What is my displacement?
A duck walks 60 m north and then 40 meast. Using a scale of 1 cm = 10 m, drawthe displacement vectors of the duck.What is ...
Adding vectors – the parallelogram method
Add two vectors:100 mi east50 mi at 45o north of eastFind the length and direction of theresultant using a ruler and protr...
Resultant = 145 +/- 5Direction = 15o
A = 80 mi westB = 60 mi at 45o south of eastA+B=?Find the length and direction of theresultant using a ruler and protractor.
How does the displacement of a moving objectcompare to its distance covered?          Displacement <= distance
Speed – a measure of how fast something moves     - the rate at which distance is coveredYou drive 180 miles in 3 hours. W...
Average speed = 60 mile/hourUnit for speed in SI system is meters/secondConvert this speed to meters/second    1 mile = 16...
Instantaneous speed      - speedometerIs speed a scalar or vector?Velocity     - speed with a direction     - vector
A baseball is thrown at 90 mi/hr. How longdoes it take to travel the 60.5 ft from thepitcher’s mound to home plate? (3.3 f...
Motion and vectors regents
Motion and vectors regents
Motion and vectors regents
Motion and vectors regents
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Motion and vectors regents

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Motion and vectors regents

  1. 1. All physics quantities fall into one of two categories:Scalar – a quantity that can be described with a singlenumber (size, magnitude). Ex. I drove 15 miles. This is the quantity known as distance
  2. 2. Vector – a quantity that includes a number and adirection. Ex – I drove 10 miles south. This quantity is known as displacementDisplacement can be defined two ways 1) distance traveled in a particular direction 2) final location relative to a starting point
  3. 3. Which person traveled the greatest distance?Which person had the greatest displacement?
  4. 4. Vectors are represented by an arrow - the length represents the size or magnitude - the angle represents the direction
  5. 5. Vector AdditionResultant: the term given for the final sum vector whenadding 2 or more vectors together Question: 4 cm + 5 cm = ? WRONG!!! 4 cm north + 5 cm north = ? 9 cm north 4 cm north + 5 cm south = ? 1 cm south
  6. 6. I walk 3 blocks south, 4 blocks east and3 blocks north.a)What is my distance convered?b)What is my displacement?
  7. 7. A duck walks 60 m north and then 40 meast. Using a scale of 1 cm = 10 m, drawthe displacement vectors of the duck.What is the resultant displacement?What is the angle between the resultantand north?
  8. 8. Adding vectors – the parallelogram method
  9. 9. Add two vectors:100 mi east50 mi at 45o north of eastFind the length and direction of theresultant using a ruler and protractor.
  10. 10. Resultant = 145 +/- 5Direction = 15o
  11. 11. A = 80 mi westB = 60 mi at 45o south of eastA+B=?Find the length and direction of theresultant using a ruler and protractor.
  12. 12. How does the displacement of a moving objectcompare to its distance covered? Displacement <= distance
  13. 13. Speed – a measure of how fast something moves - the rate at which distance is coveredYou drive 180 miles in 3 hours. What is youraverage speed?
  14. 14. Average speed = 60 mile/hourUnit for speed in SI system is meters/secondConvert this speed to meters/second 1 mile = 1609 m 1 hour = 3600 s
  15. 15. Instantaneous speed - speedometerIs speed a scalar or vector?Velocity - speed with a direction - vector
  16. 16. A baseball is thrown at 90 mi/hr. How longdoes it take to travel the 60.5 ft from thepitcher’s mound to home plate? (3.3 ft = 1 m)v = 40 m/sd = 18.3 mt = 0.46 sImpossible!!!

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