Physics day1
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PSHS 3rd Year (Batch 2013)...

PSHS 3rd Year (Batch 2013)
Physics Day 1 Tutorial Class
Topics: Goal-setting, Diagnostic Test answers
Test topic: Physics terms, Significant Figures, Uniform Linear Motion, Uniformly Accelerated Motion, Projectile Motion

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Physics day1 Physics day1 Presentation Transcript

  • PSHS 3RD YEAR PHYSICS
    SESSION 1
  • PLS. BRING OUT YOUR BALLPEN AND CALCULATOR. 
  • 1. WHAT ARE YOUR GOAL GRADES?
  • How to compute for your tentative grade?
  • 2. WHAT IS YOUR DAILY SCHEDULE?
  • 3. DO YOU FOLLOW YOUR SCHEDULE?
  • HOW MUCH DO YOU REALLY WANT TO IMPROVE YOUR GRADES?
    1. Define your goals.
    2. Make a plan.
    4. Revise.
    3. Follow your plan.
  • THE KEY TO SUCCESS
    # of CORRECT
    ITEMS
    BATTING AVERAGE
    6
    Every 5 questions,
    3 correct answers.
    Student A
    2 days=
    6
    3 days=
    Every 3 questions,
    2 are correct.
    Student B
    10
    10 days=
    Every 10 questions,
    1 is correct.
    Student C
    PERSISTENCE!
  • The key to doing well in 3rd Yr is to PRACTICE. 
    Change your 1st /2nd Yr Strategy!
  • Let’s see what we remember in physics…
  • Diagnostics - Answers
    E. MODEL
    C. THEORY
    1. A kind of picture or analogy that helps to describe a phenomenon in terms of something we already know.
    2. A broader and more detailed picture that aims to explain and order observations that has been tested and proven through experimentation.
  • Diagnostics - Answers
    4. Refers to the type of units or base quantities that make up a quantity. For example, for area, it is length. For velocity, we have length and time.
    3. Refers to the repeatability of the same measurement using a given instrument.
    D. PRECISION
    F. DIMENSION OF A QUANTITY
  • Diagnostics - Answers
    6. Refers to how close a measurement is to the true value.
    B. ACCURACY
    A. LAW
    5. Concise but general statements about how nature behaves, found experimentally valid over a wide range of observed phenomena. They usually take the form of a relationship or equation.
  • 7. The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of ten in (a) years ________
  • 7. The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of ten in (b) seconds ________
    Dimensional Analysis
  • STEP 1: Convert all measurements to the same unit.
    METER
    8. Express the following sum with the correct significant figures:
  • 8. (cont’d)
    STEP 2: Get the sum before converting to significant figures. Why?
    To get the most ACCURATE result.
  • 8. (cont’d)
    STEP 3: After adding, express the sum in significant figures.
    SIGNIFICANT FIGURES:
    Rule for addition / subtraction:
    Among the given data,
    follow the LEAST NUMBER OF DECIMAL PLACES.
    3 significant figures. Therefore,
    3.759  3.76 m
  • 8. In summary
    1. Convert all measurements to the same unit. (METERS, SECONDS, KILOGRAMS)
    2. Get the sum before converting to significant figures.
    3. After adding, express the sum in significant figures.
  • 9. A car traveling 88 km/h is 110 m behind a truck traveling 75 km/h. How long will it take the care to reach the truck?
  • 10. A stone is thrown vertically upward with a speed of 18.0 m/s. (a.) How fast is it moving when it reaches a height of 11.0m?
  • 1. READ CAREFULLY. CHOOSE the object/s you are going to analyze.
    DRAW A CAREFUL DIAGRAM showing what is happening to the object.
    CHOOSE an origin and XY-COORDINATE SYSTEM.
    LIST the known and unknown quantities.
    THINK before jumping into the equations. APPLY the RELEVANT EQUATIONS.
    REFLECT on your answer.
    PROBLEM-SOLVING TIPS
  • 1. Acceleration and velocity are always in the same direction.
    FALSE
    2. An object thrown upward has zero acceleration at the highest point.
    FALSE
    True or False?
  • 10. (b.) How long is required to reach this height, 11.0m?
  • 10. (c.) Why are there two answers to 10b. ?
    ANSWER:
    There are two times when the ball is at a height of 11.0m from the reference point.
  • 11. A projectile is fired with an initial speed of 65.2 m/s at an angle of above the horizontal on a long flat firing range. Determine: (a.) the maximum height reached by the projectile.
  • 11. (b.) the total time in the air.
  • 11.( c.)the total horizontal distance covered.
  • 11.(d.) the velocity of the projectile 1.50s after firing.
  • SOME TIPS
    Get a support team.
    FAMILY, FRIENDS & TEACHERS.
    Make your books and your calculator your friends!
    Make good use of them:
    READ YOUR BOOKS.
    KNOW HOW TO USE YOUR SCI CAL.
    Take care of them.