NATIONAL SENIOR CERTIFICATE GRADE 10

NATIONAL SENIOR CERTIFICATE

GRADE 10

PHYSICAL SCIENCES: CONTROLLED TEST 2 23 SEPTEMBER 2015

NAME OF SCHOOL: _____________________________________ MARKS: 100 DURATION: 2 HOURS

This question paper consists of 11 pages, including the cover page and the data sheets

Page 1 of 11

INSTRUCTIONS AND INFORMATION 1. Write your name, grade and date on the Answer Sheet. 2. Answer all the questions. 3. This question paper consists of TEN questions. 4. Start EACH question on a NEW page in the Answer Sheet 5. Non-programmable calculators can be used. 6. Appropriate mathematical instruments may be used. 7. Number the answers correctly according to the numbering system used in this

question paper. 8. You are advised to use the Data Sheet provided. 9. Show ALL formulae and substitutions in all calculations. 10. Round off your final answers to ONE decimal place. 11. Write neatly and legibly.

Page 2 of 11

QUESTION 1: MULTIPLE CHOICE QUESTIONS

Four options are provided as possible answers to the following questions. Each question has only ONE correct answer. Choose the answer and write only the letter (A ? D) next to the question number (1.1 ? 1.6) in the ANSWER BOOK.

1.1 Which ONE of the following physical quantities is a vector?

A. Time

B. Velocity

C. Speed

D. Distance

(2)

1.2 A characteristic property of motion at constant acceleration is that the ...

A. Change in position per unit time is constant. B. Change in velocity per unit time is constant. C. Velocity remains constant for the duration of the motion. D. Change in position remains constant for the duration of the (2)

motion.

1.3

2

2

In the equation x = v t + ?at , the part ?at represents the ...

i

A. Displacement

B. Velocity

C. Time D. Acceleration

(2)

1.4 Which ONE of the following represents one mole of gas at STP?

A. 22,4 dm3 Ar

C. 32 dm3 H2

B. 28 dm3 N2

D. 44,8 dm3 He

(2)

1.5 The number of atoms in ONE formula-unit of copper(II)sulphate (CuSO4) is ...

A. 4.

B. 6.

C. 16

D. 12 (2)

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1.6 Study the equation below:

2H2(g) + O2(g) 2H2O(g)

Which ONE of the statements below is CORRECT?

A. 2 molecules of hydrogen gas react with 1 atom of oxygen gas to form 2 atoms of water vapour.

B. 4 atoms of hydrogen gas react with 2 molecules of oxygen gas to form 2 moles of water vapour.

C. 2 moles of hydrogen gas react with 1 mole of oxygen gas to form 2 moles of water vapour.

D. 4 g of hydrogen gas react with 16 g of oxygen gas to form 18 g of water (2) vapour. [12]

QUESTION 2 (Start on a new page.)

A man runs from point A in a straight line along a track ABCDEFG. The velocity-time graph below represents the motion of the man.

2.1. Using the information on the graph, describe the motion of the man from:

2.1.1. A to B

(3)

2.1.2. B to D

(2)

2.2. WITHOUT USING EQUATIONS OF MOTION, calculate the:

2.2.1. Acceleration of the man between E and G

(4)

2.2.2. Distance covered by the man in 100 s

(4)

[13]

Page 4 of 11

QUESTION 3 (Start on a new page.)

To investigate the motion of a trolley travelling at uniform acceleration, a runway is set up as shown in the sketch below. The slope of the runway is adjusted before readings are taken.

3.1. Give a reason why the slope of the runway has to be adjusted.

(2)

The ticker tape is analysed and the displacement (change in position) is measured after each 0,2 s. The table below shows the data obtained.

3.2. For this investigation, write down the:

3.2.1. Independent variable

(2)

3.2.2. Dependent variable

(2)

3.3. Draw a graph of position versus time on the attached GRAPH PAPER.

Indicate the following on your graph:

? A suitable heading

? Correct labels on both axes

? An appropriate scale on both axes

? The six plotted points

(5)

Page 5 of 11

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