INSTRUCTIONS - Web viewPart C contains 4 questions worth 5 marks each out of which you will only answer 3. Write your answers in the space provided below each question

Name:

Class:

Teacher: Mr. K. Afshar

Physics

553504-01

Summative Examination

December 2014

Question/Answer Booklet

Secondary 5

3 hours

FOR TEACHER USE ONLY

Part A _____________/20

Part B _____________/19

Part C _____________/10

Part D ___________/8

Total _____________/57

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NAME: ____________________________________

INSTRUCTIONS

1. Write your name on every page of this Exam Booklet.

2. Answer all of your selected questions on this Exam Booklet.

3. Part A contains 10 multiple-choice questions, worth 2 marks each. Indicate your answers to these questions by circling the appropriate letter. Circling more than one letter will not grant you any marks for that question.

4. Part B contains 5 questions. Write your answers in the space provided below each question. Show your work because part marks may be given for the questions in these parts of the examination.

5. Part C contains 4 questions worth 5 marks each out of which you will only answer 3. Write your answers in the space provided below each question. Show your work because part marks may be given for the questions in this part of the examination. If you answer more than 2 questions, indicate which ones you want to get graded. If your choices are not indicated, the first 2 questions will be graded only.

6. Part D contains 2 questions worth 10 marks each out of which you will only answer 1. Write your answers in the space provided below each question. Show your work because part marks may be given for the questions in this part of the examination. If you answer more than 1 question, indicate which one you want to get graded. If your choice is not indicated, the first questions will be graded only.

7. The following materials are permitted: ruler, compass, setsquare, protractor, and scientific calculator with or without a graphic display.

8. The figures in this booklet have not been drawn to scale.

9. At the end of the examination period, hand in the Exam Booklet with all your scrap paper.

10. This exam booklet has 16 pages, all of which need to be returned in order to be graded.

11. On the last page of the Exam Booklet, there is a formula sheet; you may detach it.

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NAME: ____________________________________

Part A – Multiple choice (2 marks each)

Question 1

Which one of the following graphs represents an object being thrown downwards from a balcony? Consider the y-direction only.

Question 2

Which of the following describes the vector shown below?

a) 230 N, E[28°]S

b) 230 N, S[62°]E

c) 230 N, W[28°]N

d) 230 N, S[62°]N

e) 230 N, W[28°]S

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NAME: ____________________________________

Question 3

Brianna goes for a jog in the morning before coming to school. First she runs 1.7 km southwards. Then she runs 1.1 km north, after which, she runs 3.0 km southwards again. What is her total displacement after her morning exercise?

a) 2.4 km Southb) 2.6 km Southc) 2.8 km Southd) 3.6 km Southe) 5.8 km South

Question 4

Which of the following diagram represents the forces acting on an object in free fall with air resistance pushing up against the object’s motion and wind pushing it to the east?

Question 5

An object is thrown vertically upwards with an initial velocity Vo. What will this object’s velocity be right before hitting the ground if it began and landed at the same height?

a) 0 m/sb) Voc) -Vod) -2Voe) -1/2 Vo

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NAME: ____________________________________

Question 6

Which of the following statements is false?

a) Displacement considers the difference between the initial and final position.b) Speed is defined by the distance traveled of an object as a function of timec) Distance traveled considers only the initial and final positiond) Acceleration is defined by the change of speed as a function of timee) Acceleration is measured in m/s2

Question 7

Which of the following describes the normal force?

a) It is the force acting on an object that is in free fall.b) It is the force between the object and the surface that it moves on.c) It is the force provided by a surfaced) It is the intermediate force between the two forces pulling the object in opposite

directionse) It is the force that compressed an object under pressure

Question 8

The object shown below is in motion at constant velocity towards the right. What is the value of the force of friction?

a) Ff < -30N

b) Ff = - 30N

c) Ff > -30N

d) Ff = 30N

e) Ff > 30N

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NAME: ____________________________________

Question 9

Two objects of different masses are dropped from the same height at the same time. Which one of the following statements about this situation is true? Ignore air resistance.

a) The heavier object hits the ground firstb) The heavier object has a higher initial velocityc) The heavier object has a higher final velocityd) The heavier object has a higher acceleratione) None of the above

Question 10

Which of the following statements about the following v(t) graph is true? Assume the graph is drawn to scale.

a) The total displacement after F seconds is positiveb) The object goes back to where it started after F secondsc) The velocity is 0 m/s between C and D secondsd) The acceleration of the object is 0 m/s2 at all times between A and Fe) None of the above statements are true

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NAME: ____________________________________

Part B – Short answers

Question 1 (3 marks)

Determine the signs (positive, negative or zero) of Po, vo and a in the following examples.

a) A penny being dropped into a well by a man standing 1.70m tall.

Po ____________

vo ____________

a _____________

b) An arrow being shot directly upwards.

Po ____________

vo ____________

a _____________

Question 2 (3 marks, 0.5 marks each)

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NAME: ____________________________________

Answer the following with respect to 2-D projectile motions.

a) What is the optimal angle to maximize the y-displacement?

b) What is the y-velocity at the peak of the trajectory?

c) At what angle is y-velocity equal to the x-velocity in amplitude?

d) What is the acceleration of the object in motion along the x-direction?

e) When an object reaches a single height at two different times, what does the earlier time represent?

f) How will a projectile angle greater than 90° affect the Δdx?

Question 3 (2 marks + 1 mark for significant figures)An object was launched from the ground at an initial velocity vo at an angle θ. The object landed back on the ground 4.4 seconds later. After 2.6 seconds, the object’s height was 2.9 m. Determine another time during its flight where the object’s height is 2.9 m. Explain briefly.

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NAME: ____________________________________

Question 4 (4 marks)

Determine the acceleration of the following 32kg object.

Question 5 (6 marks)9

NAME: ____________________________________

Answer the following questions based on the graph below.

a) What is the object’s displacement between the 20th and 28th second? (2 marks)

b) During which time interval(s) is the acceleration negative? (1 mark)

c) Describe what is happening at the 28th second. (1 mark)

d) If the graph above represented a car, at which point does the car come to a stop sign and continue onwards? (no explanation needed) (1 mark)

e) What is the object’s top speed? (1 mark)

Part C – Long answer (Choose 2 out of the 3 following questions)

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NAME: ____________________________________

Question 1 (5 marks)

Link is wandering the Lost Woods, trying to find the “Sword of Evil’s Bane”. He followed the map he was given. Determine his total displacement.

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NAME: ____________________________________

Question 2 (5 marks)

Two 32 kg objects are dropped from the top of a building 219m high. Object 1 feels a force of air resistance equal to 110N, while object 2 feels a force of air resistance equal to 75N. How much later does object 1 land compared to object 2?

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NAME: ____________________________________

Question 3 (5 marks)

Tiffany sky dives out of a plane located 2.1 km in the air. She needs to pull the parachute at the latest when she is 415m away from the ground. How much time can she spend in free fall before she absolutely needs to pull the string to her parachute?

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NAME: ____________________________________

Part D – Long answer (answer only 1 out of the following 2 questions)

Question 1 (7 marks + 1 mark for significant figures)

Determine whether the angry bird will strike the pig in the situation shown below.

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NAME: ____________________________________

Question 2 (7 marks + 1 marks for significant figures)Token race question :D (you knew it was coming)

Elizabeth and Allyson participate in a sister-sister relay running race. Elizabeth starts the race and needs to run 500.m towards Allyson, at which point Allyson needs to run 500.m back to finish the race. What will their combined time be if:- Elizabeth

Accelerates at 0.51m/s2 Decelerates at -1.11m/s2

Max speed 8.33m/s Needs to come to a halt before activating Allyson

- Allyson Accelerates at 0.44m/s2

Max speed 9.90m/s Allyson finishes the race at top speed

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NAME: ____________________________________

Formulas

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