A bullet of mass 20 g is fired from a stationary rifle of mass 3 kg. Assume that thebullet moves horizontally. Immediately after firing, the rifle recoils (moves back) with avelocity of 1,4 m∙s-1. 4.1 Calculate the speed at which the bullet leaves the rifle. (4) The bullet strikes a stationary 5 kg wooden block … Read more
The letters A to D in the table below represent four organic compounds. Use the information in the table to answer the questions that follow. 2.1 Write down the: 2.1.1 Letter that represents a ketone (1) 2.1.2 Structural formula of the functional group of compound C (1) 2.1.3 General formula of the homologous series to … Read more
Ball A is projected vertically upwards at a velocity of 16 m∙s-1 from the ground. Ignore the effects of air resistance. Use the ground as zero reference. 3.1 Calculate the time taken by ball A to return to the ground. (4) 3.2 Sketch a velocity-time graph for ball A. Show the following on the graph: … Read more
2.1 Two blocks of mass M kg and 2,5 kg respectively are connected by a light, inextensible string. The string runs over a light, frictionless pulley, as shown in the diagram below. The blocks are stationary. 2.1.1 State Newton’s THIRD law in words. (2) 2.1.2 Calculate the tension in the string. (3) The coefficient of … Read more
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 (1.1–1.10) in the ANSWER BOOK, for example 1.11 E. 1.1 Which ONE of the following pairs of reactants is used in a reaction during … Read more
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 (1.1–1.10) in the ANSWER BOOK, for example 1.11 E. 1.1 Two forces, F1 and F2, are applied on a crate lying … Read more
5.1.1 Interpret China’s net migration rate. (2) 5.1.2 Calculate the difference between the projected population sizes of China and the USA at the end of 2015 based on their population growth. (5) Use the bar graph to answer the following questions. 5.2.1 Name the region that shows the greatest difference between the amount of crude … Read more
Use ANNEXURE C containing information about the average annual tuition costs for undergraduate studies, student admission fees and accommodation fees at UJ for 2016 to answer the following questions. 4.1.1 Give ONE possible reason why the course fees are given as a scale of fees and not as a single fee. (2) 4.1.2 Staying in … Read more
Use the floor plan of his house in ANNEXURE B to answer the following questions 3.1 Give a reason why it is acceptable for the kitchen and living room to only have door openings (without doors) leading into the passage. (2) 3.2 Which rooms shown on the floor plan will be much cooler during winter? … Read more