PPT Week 1 Midterm G12 General Physics 1 SY 2024-2025 PDF

MIDTERM WEEK 1 SLIDESMANIA  WELCOME BACK TO SCHOOL! SLIDESMANIA WEEK LESSON LEARNING TASK WEEK 1 System of Measurement Enrichment Activity WEEK 2...

MIDTERM WEEK 1 SLIDESMANIA  WELCOME BACK TO SCHOOL! SLIDESMANIA WEEK LESSON LEARNING TASK WEEK 1 System of Measurement Enrichment Activity WEEK 2 Vectors Written Work 1 WEEK 3 KINEMATICS: MOTION IN 2D AND 3D Performance Task 1(Prototype-Making) WEEK 4 Newton’s Laws Of Motion Performance Task 2 (Newton’s Cradle) WEEK 5 Free-Body Diagram Written Work 2 Week 6 Work, Energy, and Energy Conservation Performance Task 3 (Comic Strip) Week 7 Centre of Mass, Momentum, Impulse, and Enrichment Activity Collision Week 8 Rotational equilibrium and rotational Enrichment Activity dynamics Name: Hazel B. Limon Address: Pussian, Alcala, Cagayan Birthday: August 31, 1998 MECHANICS: 1. Begin by introducing the activity and explaining that students must brainstorm a list of everyday objects or phenomena that they think involve physics. 2. Provide students a few examples to get them started. 3. Give students 10-15 minutes to work individually or in small groups to brainstorm as many ideas as they can. MECHANICS: 4. After the brainstorming session, have students share their ideas with the class and write them on the board or a large piece of paper. 5. As a class, discuss the ideas and identify which involve physics which ones involve physics concepts. 6. Finally, remind students that physics is all around us and that understanding these concepts can help us better understand and appreciate the world we live in. At the end of the lesson, the students should be able to: describe the need for the International Standard Units of Measurement in our today’s lives excellently; convert measurements from one unit to the other; identify units that are widely used in our day to day activity at home and in school; and solve measurement problems involving conversion of units. SLIDESMANIA RULE # 1 Nonzero digits are always significant. 38.57 mL = (4) 288 g = (3)  RULE # 2 Zeroes are sometimes significant, and sometimes they are not. a. Zeroes at the beginning of a number (used just to position the decimal point) are never significant. 0.052 g (2) 0.00364 m (3) SLIDESMANIA  RULE # 2 Zeroes are sometimes significant, and sometimes they are not. b. Zeroes between nonzero digits are always significant. 2007 g (4) 6.08 km (3) SLIDESMANIA  RULE # 2 Zeroes are sometimes significant, and sometimes they are not. c. Zeroes at the end of a number that contains a decimal point are always significant. 38.0 cm (3) 440.0 m (4) SLIDESMANIA  RULE # 2 Zeroes are sometimes significant, and sometimes they are not. d. Zeroes at the end of a number that does not contain a decimal point may or may not be significant. 24,300 km (3, 4, 5) 7,500 Ml (2, 3, 4) SLIDESMANIA RULE # 3 Exact numbers can be considered as having an unlimited number of significant figures. This applies to defined quantities. 1 yard = 3 ft 1 in. = 2.54 cm 1 ream=500 sheets  RULE # 4 In addition and subtraction, the last digit retained in the sum or difference is determined by the position of the first doubtful digit. SLIDESMANIA  Addition 37.24 mL + 10.3 mL = 47.54 mL This will be reported as 45.5 mL Subtraction 27.87 – 21.2342 g = 6.6358 g This will be reported as 6.64 g SLIDESMANIA  RULE # 4 In multiplication and division, an answer contains no more significant figures than the least number of significant figures used in the operation. SLIDESMANIA  Multiplication 2.5 X 3.42=8.55 This will be reported as 8.6 SLIDESMANIA  What is the area of a rectangle 1.23 cm wide and 12.34 cm long? SLIDESMANIA At the end of the lesson, the students should be able to: determine the role of scientific notation in measurement; and solve measurement problems involving conversion of units, expression of measurements in scientific notation. SLIDESMANIA RULE # 1 MOVING THE DECIMAL POINT Move the decimal point until there is a single digit (1-9) at the left position of the decimal point. 12,000,234.00 = 12,000,234.00  RULE # 2 COUNT Count how many places the decimal point moved. The number it moved will be the exponent of the 10 in the notation. 12,000,234.00 7 moves SLIDESMANIA RULE # 3 Write the notation 12,000,234.00 = 1.20 x 10^7 C 7 100% % 8 X 2 9 < / Try this: 4 5 6 X 1 C E 2 0 3. + = 1. 10,042,017 = 2. 0.0212 = 3. 312,125 = 4. 0.000000911 = 5. 2300 = SLIDESMANIA Fundamental Quantities Derived Quantities  In your opinion, what is the essence of using significant figures and scientific notation in presenting numerical values? SLIDESMANIA SLIDESMANIA Common Conversion Factors  , 55.13 lbs , km 125.50 km , 29.53 in/min  100% C 7 % 8 X 2 9 < / Try this: 24 km= __ m 4 5 6 X 1 C 2 3 1. + 0. = 123 m= __ km E 2. 3. 49 inch= __ cm 4. 12 ft= __ mi 5. 1.21 x 10^22 s= __hr= __days  ACCURACY VS. PRECISION Accuracy refers to the Precision refers to how closeness of measured close the measured values to the actual values are to each other. value. SLIDESMANIA SLIDESMANIA  Systematic error- due to uncalibrated Instrument or equipment for measurement. Type of Errors Random error- due to unknown and unpredictable changes in the experiment. SLIDESMANIA At the end of the lesson, the students should be able to: perform addition of vectors; rewrite a vector in component form identify the different roles of physics particularly to the Christian living; and differentiate derived units from base units. SLIDESMANIA  Scalar vs Vector SCALAR VECTORS Have MAGNITUDE only Have both MAGNITUDE and DIRECTION SLIDESMANIA  Scalars Vectors Name Quantity Name Quantity Distance 10 m Displacement 10 m, South Time 5 minutes Acceleration 9.8 m/s2, downward Mass 3 kg Weight 3 N, downward Speed 30 km/hr Velocity 30 km/hr, 30° North East Area 64 m2 Force 30 N, 43 ° South West Volume 100 ml Tension 100 N to the right Work 300 J Friction 20 N, to the left Resistance 4Ω Torque 100 N.m, counter clockwise Voltage 220 V Momentum - 1000 kg.m/s Current 1A Electric Field + 450 N/C Density 2.7 g/cm3 Magnetic Field + 600 Tesla Power 760 watt Temperature 273 K Pressure 1 atm Frequency 8 Hertz Wavelength 540 nm C 7 4 % 8 5 X 2 9 6 < / X Try this: QUANTITY NAME SCALAR OR VECTOR 1 2 3 + 1) 39 °C C E 0. = 2) 10OO km ,West 3) 500 N , 30 degrees North East 4) 50 kph 5) 1 , 500 J 6) 500 Giga Byte 7) 100 Hertz 8) 3 x 10^8 m/s 9) 1 year 10) 250 kg.m/s , to the left SLIDESMANIA  Adding Vectors SLIDESMANIA  Rules in Adding Vectors Collinear Vectors Non collinear Vectors Vectors that are parallel Intersecting vectors to the same line. Same direction- Addition Opposite direction – Subtraction SLIDESMANIA  Same Direction- ADD A man walks 54.5 meters east, then another 30 meters east. Calculate his displacement relative to where he started? SLIDESMANIA  Opposite Direction- SUBTRACT A man walks 54.5 meters east, then 30 meters west. Calculate his displacement relative to where he started? SLIDESMANIA  Non collinear Vector A man walks 95 km, East then 55 km, north. Calculate his resultant displacement. SLIDESMANIA  Non collinear Vector Suppose a person walked 65 m, 25 degrees North of East. What were his horizontal and vertical components? SLIDESMANIA  Component of Vectors Ax= A cos Ɵ (horizontal component) Ay= A sin Ɵ (vertical component) SLIDESMANIA  Component of vectors Multiple Vectors 2 2 Ax= A cos Ɵ Ay= A sin Ɵ Bx= B cos Ɵ By= B sin Ɵ Rx= Σ Ax Bx SLIDESMANIA Ry= Σ Ay By  A= 21 m, 45° N of E B= 12 m, 45° N of W SLIDESMANIA  A= 4 m, 40° N of E B= 2 m, E C= 5.20 m, 30° S of W D=6.50 m, S SLIDESMANIA  Problem Solving! Siam walks 26 yards to the north along the sideline, pauses, and walks 12 yards back to the south. SLIDESMANIA  Problem Solving! On her trip from home to school, Lucky drives along three streets after exiting the driveway. She drives 1.85 miles south, 2.43 miles east and 0.35 miles north. Determine the magnitude of Karla's resultant displacement. SLIDESMANIA  Problem Solving! Determine the magnitude and direction of the resultant force that acts on a body which is 200 N East and another force of 150 N, 30 degrees North of West. SLIDESMANIA  Problem Solving! A jogger runs directly North for 30 km, then turns to the West and goes 20 km. How far is she from the starting point and in what direction? SLIDESMANIA  It is important to measure certain things right such like; distance, time, and accuracy. By measuring these things, we can better understand the world around us. Life as a matter of fact, cannot succeed if there is no such thing as measurement because the Creator gave us the exact amounts of everything we are made of in order for us to live. SLIDESMANIA Enrichment Activity Thank you! SLIDESMANIA