#### Transcript 5/19 do now * on a new sheet

5/19 do now – on a new sheet • A spark timer is used to record the position of a lab cart accelerating uniformly from rest. Each 0.10 second, the timer marks a dot on a recording tape to indicate the position of the cart at that instant, as shown. The linear measurement between t = 0 second to t = 0.30 is 6.0 cm. Calculate the magnitude of the acceleration of the cart during that time interval. [show all work including equation and substitution with number and units.] d = vit + ½ at2 6.0 cm = ½ a(0.3s)2 a = 133 cm/s2 Objectives – Regents Review • Test 1 • Mechanics review packet - Quiz on Tuesday 5/20 • Homework: – 5 Castle learning assignments – due 5/26 – quiz on 5/27 – Work and energy review packet – quiz on 5/30 • When finished all assignments, you may have extra credit packet 5/20 do now • Mechanics Review Packet Quiz Objectives – Regents Review • Test 1 / test 1 correction • Work and energy review packet – quiz on 5/30 • Homework: – 5 Castle learning assignments – due 5/26 – quiz on 5/27 • When finished all assignments, you may have extra credit packet • No post tomorrow – make up labs today and Thursday 5/21 do now • Newton’s 1st law (aka the law of inertia) says that an object will remain its state of motion unless acted on by an unbalanced force. 1. What does inertia mean? Inertia: the resistance an object has to a change in its state of motion. 2. How is inertia related to mass? 3. What is the state of motion? 4. What is force? Mass is the measure of amount of inertia. More mass, more inertia. Mass is the measure of amount of inertia. More mass, more inertia. The state of motion of an object is defined by its velocity - the speed with a direction. 5. What is unbalanced force? Unbalance force is the net force. Net force causes acceleration or change in state of motion. Objectives – Regents Review • Give back mechanics quiz – you may retake during post. • Test 1 correction / Test 2 • Work and energy review packet – quiz on 5/30 • T-shirt money is due tomorrow - $8.00 • Homework: – 5 Castle learning assignments – due 5/26 – quiz on 5/27 • No post today – make up labs Tomorrow 5-22 Objectives • State assessment, no questions. • T-shirt money is due tomorrow - $8.00 • Homework: – 5 Castle learning assignments – due 5/26 – quiz on 5/27 – Work and energy review packet – quiz on 5/30 • Last day to make up labs • Test 1 correction / Test 2 5/27 do now • Castle learning quiz Objectives • Test 1C/Tests correction – please, please ask for help if you have questions!!!! • Work and energy review packet, to be collected – quiz on 5/30 • TOMORROW is last day for T-shirt money - $8.00 • Homework: – 5 Castle learning assignments – REVIEW FOR FINAL - due 6/3 – Essay – due 6/5 – 10% of 4th quarter grade • FINAL EXAM: 6/4 7:30am - 8:50am, bring calculator, ruler, protractor • Return your text books. • You may retake quizzes during post – grade is averaged • Extended Post Session Review This Week – Wednesday and Friday – 2:00 – 4:00. 5/28 do now 1. Define Newton’s 2nd Law The direction of acceleration of an object is in the same direction as the net force. The magnitude of acceleration of an object is directly proportional to its net force and inversely proportional to its mass. 2. What does force mean? A force is a push or pull upon an object resulting from the object's interaction with another object. 3. What is the meaning of net force? Net force, also known as unbalanced force, is the sum of all forces. Net force causes acceleration. 4. What is the definition of acceleration? Acceleration is defined as change of velocity over time. Acceleration is caused by net force. • Newton’s 1st law (aka the law of inertia) says that an object will remain its state of motion unless acted on by an unbalanced force. 1. What does inertia mean? Inertia is the resistance an object has to a change in its state of 2. How is inertia related to mass? motion. Mass the measure of amount of inertia. More mass, more inertia. 3. What is is the state of motion? The state of motion of an object is defined by its velocity - the speed with a direction. 4. What is force? A force is a push or pull upon an object resulting from the object's 5. What is unbalanced force?object. interaction with another Unbalance force is the net force. Net force causes acceleration or change in state of motion. Objectives • Go over castle learning quiz • Tests correction/Test C, Test 3 – please, please ask for help if you have questions!!!! • Work and energy review packet, to be collected – quiz on 5/30 • TODAY is last day for T-shirt money - $8.00 • Homework: – 5 Castle learning assignments – REVIEW FOR FINAL - due 6/3 – Essay – due 6/5 – 10% of 4th quarter grade • FINAL EXAM: 6/4 7:30am - 8:50am, bring calculator, ruler, protractor • Return your text books. • You may retake quizzes during post – grade is averaged • Extended Post Session Review This Week – Wednesday and Friday – 2:00 – 4:00. 5/29 do now • Castle learning review sheet 2A Objectives • Go over castle learning review sheet • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Work and energy review packet, to be collected – quiz tomorrow • Homework: – 5 Castle learning assignments – REVIEW FOR FINAL - due 6/3 – Essay – due 6/5 – 10% of 4th quarter grade • FINAL EXAM: 6/4 7:30am - 8:50am, bring calculator, ruler, protractor • Return your text books. • You may retake quizzes during post – grade is averaged • Extended Post Session Review This Week – Today, 2:00 – 3:00 – Tomorrow, 2:00 – 4:00. 5/30 do now – on a new sheet 1. Newton’s second law predicts the relationship that acceleration will have with the net force for a given mass. Explain this relationship by writing the formula and then explaining if there is a direct or inverse relationship between the force and the acceleration (1 pt), what happens to the acceleration if the mass changes (1 pt), and then explain what conditions must be necessary for equilibrium to exist in the system (1 pt). a Fnet m Acceleration is directly proportional to net force, inversely proportional to mass. In order for an object to stay in equilibrium, Fnet must be zero. 2. Give two examples of mechanical waves and describe if they are longitudinal or transverse (2 pts). Explain at least two similarities between mechanical waves and electromagnetic waves (2 pts) and describe at least one difference (1 pt). Both sound and stadium wave are mechanical waves. Sound wave is a longitudinal wave and stadium wave is a transverse wave. Both mechanical wave and electromagnetic wave transfer energy and have wave characteristics, but mechanical wave can only propagate through matter, electromagnetic wave can travel through vacuum and matter. Objectives • Energy packet is due/Energy Packet Quiz • Final Exam Review packet • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Homework: – 5 Castle learning assignments – REVIEW FOR FINAL - due 6/3 – Essay – due 6/5 – 10% of 4th quarter grade • FINAL EXAM: 6/4 7:30am - 8:50am, bring calculator, ruler, protractor • Return your text books. • You may retake quizzes during post – grade is averaged • Extended Post Session Review Today, 2:00 – 4:00. 6/2 do now 1. Which statement about ammeters and voltmeters is correct? a. The internal resistance of both meters should be low. b. Both meters should have a negligible effect on the circuit being measured. c. The potential drop across both meters should be made as large as possible. d. The scale range on both meters must be the same. 2. The spring of a toy car is wound by pushing the car backward with an average force of 15 N through a distance of 0.50 meter. How much elastic potential energy is stored in the car’s spring during this process? W = Fd = ∆ET (15 N)(0.50 m) = PEs - 0 PEs = 7.5 J Objectives • Go Over Final Exam Review packet • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Homework: – 5 Castle learning assignments – REVIEW FOR FINAL - due 6/3 – Essay – due 6/5 – 10% of 4th quarter grade • FINAL EXAM: Wed. 7:30am - 8:50am, bring calculator, ruler, protractor. Please report to Rm 146 if you have conflict – Pd. 2 – Pd. 4 – Pd. 8 217 218 220 • Return your text books. • You may retake quizzes during post – grade is averaged • Extended Post Session Thurs and Fri, 2:00 – 4:00. 6/5 do now – on a new sheet Four identical projectiles are launched with the same initial speed, v, but at various angles above the level ground. Which diagram represents the initial velocity of the projectile that will have the largest total horizontal displacement? [Neglect air resistance.] A. B. C. D. Objectives • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Essay – due TODAY – 10% of 4th quarter grade • Homework: – Lab procedure writing packet – due Monday 6/9 – Quiz on 6/9 – 5 Castle learning assignments – REVIEW FOR REGENTS - due 6/13 – quiz on 6/13 • Return your text books. • You may retake quizzes during post – grade is averaged • Extended Post Session This Week Thurs, 2:00 – 4:00. Regents Exam – 6/20 6/6 do now The diagram represents a bicycle and rider traveling to the right at a constant speed. A ball is dropped from the hand of the cyclist. Which set of graphs below best represents the horizontal motion of the ball relative to the ground? [Neglect air resistance.] A. C. B. D. Objectives • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Essay – due YESTERDAY – 10% of 4th quarter grade • Homework: – Lab procedure writing packet – due Monday 6/9 – Quiz on 6/9 – 5 Castle learning assignments – REVIEW FOR REGENTS - due 6/13 – quiz on 6/13 • RETURN YOUR TEXT BOOKS. • You may retake quizzes during post – grade is averaged Regents Exam – 6/20 6/9 do now • Experiments design quiz Objectives • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Essay – due Last Thursday – 10% of 4th quarter grade • Homework: – 5 Castle learning assignments – REVIEW FOR REGENTS - due 6/13 – quiz on 6/13 • RETURN YOUR TEXT BOOKS. • You may retake final review quizzes during post – grade is averaged Regents Exam – 6/20 6/11 do now • Which object will have the greatest change in electrical energy? [show work] 1. an electron moved through a potential difference of 2.0 V 2. a metal sphere with a charge of 1.0 × 10−9 C moved through a potential difference of 2.0 V 3. an electron moved through a potential difference of 4.0 V 4. a metal sphere with a charge of 1.0 × 10−9 C moved through a potential difference of 4.0 V Objectives • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Homework: – 5 Castle learning assignments – REVIEW FOR REGENTS - due 6/12 – quiz on 6/13 • RETURN YOUR TEXT BOOKS. • You may retake final review quizzes during post – grade is averaged Regents Exam – 6/20 6/12 do now • A skier starting from rest skis straight down a slope 50. meters long in 5.0 seconds. What is the magnitude of the acceleration of the skier? [show work] • An object accelerates uniformly from rest to a speed of 50. meters per second in 5.0 seconds. What is the average speed of the object during the 5.0 second interval? [show work] Objectives • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Homework: – 5 Castle learning assignments – REVIEW FOR REGENTS - due tonight – quiz tomorrow • RETURN YOUR TEXT BOOKS. • You may retake final review quizzes during post – grade is averaged Regents Exam – 6/20 6/13 do now • Castle learning quiz 6/13 Objectives • Castle learning quiz • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Homework: – 5 Castle learning assignments – REVIEW FOR REGENTS - due 6/20 • RETURN YOUR TEXT BOOKS. • You may retake final review quizzes during post – grade is averaged Regents Exam – 6/20 12:00pm – 3:00 pm Period 2 – Rm 219 Period 4 – Rm 220 Period 8 – Rm 222 6/16 do now • The diagram shows a ball thrown toward the east and upward at an angle of 30° to the horizontal. Point X represents the ball's highest point. [Neglect friction.] a. What is the direction of the ball's velocity at point X? b. What is the direction of the ball’s net force at point X? c. What is the direction of the ball’s acceleration at point X? 6/16 Objectives • Happy Last Day of the school Year! Thanks to all who worked hard all year! • Tests correction/new review tests – please, please ask for help if you have questions!!!! • Homework: – 5 Castle learning assignments – REVIEW FOR REGENTS due 6/20 • RETURN YOUR TEXT BOOKS. Please come for extra help if you can • • • • Tuesday – all day Wednesday – 12:30 – 2:30 Thursday – 8:00 – 11:00 Friday – 8:00 – 11:00 Regents Exam – 6/20 12:00pm – 3:00 pm Period 2 – Rm 219 Period 4 – Rm 220 Period 8 – Rm 222 Test 1, 1C Test 2, 2C Test 3, 3C Please get the test from web site: http://www.nysedregents.org/ph ysics/ Test 4, 4C Test 5, 5C Test 6, 6C Test 7 Test 8 Test 9 Test 10 Test 11 Test 12 All unfinished tests are due 6/20 before Regents Exam