Student Name: PHYSICS 2014 Unit 2 Key Topic Test 1 Aspects of Motion Recommended writing time*: 45 minutes Total number of marks available: 45 marks QUESTION BOOK SECTION A MULTIPLE-CHOICE QUESTIONS SECTION B SHORT-ANSWER QUESTIONS * The recommended writing time is a guide to the time students should take to complete this test. Teachers may wish to alter this time and can do so at their own discretion. TSSM 2014 Page 1 of 12
Conditions and restrictions Students are permitted to bring into the room for this test: pens, pencils, highlighters, erasers, sharpeners, ruler and an approved scientific calculator. Students may bring to the test an A4 sheet of notes. The A4 sheet may be annotated on both sides. Students are NOT permitted to bring into the room for this test: blank sheets of paper and/or white out liquid/tape. Materials supplied Question and answer book of 12 pages. Formula and Data sheet. Instructions Print your name in the space provided on the top of the front page. All written responses must be in English. SECTION A Multiple-choice questions Students are NOT permitted to bring mobile phones and/or any other unauthorised electronic communication devices into the room for this test. TSSM 2014 Page 2 of 12
SECTION A Multiple-choice questions Instructions for Section A Section A consists of 10 multiple-choice questions. Choose the response that is correct or that best answers the question. Write the letter corresponding to your chosen answer in the box at the end of each question. A correct answer is worth 2 marks, an incorrect answer scores 0. Marks will not be deducted for incorrect answers. No marks will be given if more than one answer is given for any question. Assume g = 10 m s -2 in this test. The following information relates to Questions 1 to 4 FINISH A hiker walks 2 km North, 3 km East and then a further 2 km North during a period of 5 hours. START Question 1 Determine the distance travelled by the hiker during the 5 hours. A. 4 km B. 4 km North C. 7 km D. 7 km North TSSM 2014 Page 3 of 12
Question 2 Determine the displacement of the hiker during the 5 hours A. 5 km North 37 East B. 5 km North 53 East C. 5 km North East D. 7 km North Question 3 Determine the average speed of the hiker during the 5 hours A. 0.8 km h -1 B. 1.0 km h -1 C. 1.4 km h -1 D. 1.4 km h -1 North East Question 4 Determine the average velocity of the hiker during the 5 hours. A. 1.0 km h -1 North 37 East B. 1.0 km h -1 North 53 East C. 1.4 km h -1 North 37 East D. 1.4 km h -1 North 53 East TSSM 2014 Page 4 of 12
The following information relates to Questions 5 to 7 A ball is thrown up into the air. It rises to the highest point above the point of release, before returning to its starting position. Six graphs are shown below. You should choose the correct graph to answer each of the next three questions. Take the upwards direction to be positive. Question 5 Which graph best depicts the displacement of the ball for the time the ball is in the air? Question 6 Which graph best depicts the velocity of the ball for the time the ball is in the air? Question 7 Which graph best depicts the acceleration of the ball for the time the ball is in the air? TSSM 2014 Page 5 of 12
The following information relates to Questions 8 to 9 The graph below shows the distance travelled versus time taken for an object. D C B A Question 8 In which section of the graph is the object experiencing positive acceleration? A. Section A B. Section B C. Section C D. Section D Question 9 In which section of the graph is the object travelling at constant (non-zero) velocity? A. Section A B. Section B C. Section C D. Section D TSSM 2014 Page 6 of 12
Question 10 Which of the following list includes only vector quantities? A. displacement, speed, acceleration B. displacement, velocity, acceleration C. distance, speed, acceleration D. distance, velocity, acceleration TSSM 2014 Page 7 of 12
SECTION B Short-answer questions Instructions for Section B Section B consists of 12 questions. Answer all questions in the spaces provided. Your answers should be expressed correctly using appropriate physics terms. Numerical answers should be calculated fully and expressed with the appropriate number of significant figures. Where an answer box has a unit printed in it, give your answer in that unit. In questions where more than one mark is available, appropriate working should be shown. The following information relates to Questions 1 to 5. A car accelerates from rest with a constant acceleration of 3.0 m s -2. Question 1 What is the speed of the car after 4.5 seconds? m s -1 2 marks Question 2 Express your answer to Question 1 in km h -1. km h -1 1 mark Question 3 What distance does the car travel in the first 4.5 seconds of its motion? m 2 marks TSSM 2014 Page 8 of 12
Question 4 Find the average speed of the car over the first 4.5 seconds of motion. m s -1 2 marks Question 5 How far does the car travel in the third second of its motion? m 2 marks TSSM 2014 Page 9 of 12
The following information relates to Questions 6 to 12. A cyclist commences his journey in a northerly direction (take this as positive) and travels only in a straight line. The motion of the cyclist is described below: (i) (ii) (iii) (iv) (v) The cyclist commences from rest and accelerates at a constant rate to a velocity of 15 m s -1 in 10 seconds. The cyclist remains at this speed for a further 30 seconds. The cyclist then comes to rest over a period of 20 seconds. The cyclist remains at rest for 10 seconds Finally the, cyclist turns around and accelerates in a southerly direction, reaching a velocity of 10 m s -1 in 10 seconds. Question 6 Draw a velocity vs time graph that depicts the motion of a cyclist as described above. Use the axis that has been provided for you. 5 marks TSSM 2014 Page 10 of 12
Question 7 Explain how the initial acceleration of the cyclist can be determined from the graph. 1 mark Question 8 Calculate the acceleration during the first 10 seconds of the cyclist motion. m s -2 2 marks Question 9 Using the graph, determine the cyclist s displacement in the first 60 seconds of his journey. Clearly show your working. m Question 10 Determine the total displacement of the cyclist over the 80 seconds. 3 marks m Question 11 Hence determine the average velocity of the cyclist over the 80 seconds. 3 marks m s -1 2 marks END OF KEY TOPIC TEST TSSM 2014 Page 11 of 12
Physics Unit 2 Formula and Data Sheet Motion 1. velocity; acceleration 2. equations for constant acceleration 3. Newton's second law F = ma 4. gravitational potential energy near the surface of the Earth 5. elastic potential energy 6. kinetic energy 7. mechanical work W = Fx 8. power 9. momentum; impulse 10. acceleration due to gravity Prefixes/Units p = pico = 10-12 n = nano = 10-9 µ = micro = 10-6 m = milli = 10-3 k = kilo = 10 3 M = mega = 10 6 G = giga = 10 9 1 = tonne = 10 3 kg TSSM 2014 Page 12 of 12