Physical Science Practice Exams
NATIONAL SENIOR CERTIFICATE EXAMINATION NOVEMBER 2008
PHYSICAL SCIENCES: PAPER I Time: 3 hours PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY 1. This paper consists of: • a question paper of 17 pages • a data and formula booklet of 3 pages (i – iii) Please make sure that your question paper is complete. 2. 3. 4. 5. 6. Remove the pages of data and formulae from the middle of this question paper. Use the data and formulae whenever necessary. Read the questions carefully. In Question 1 answer 1.1, 1.2 and EITHER 1.3 OR 1.4. In Question 4 answer EITHER 4.1 OR 4.2. It is in your own interest to write legibly and to set your work out neatly. 150 marks
IEB Copyright © 2008
NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I
Page 2 of 17
QUESTION 1
PLAY BALL
Start this question on a new page 1.1 Neil says that a bouncing ball will have inelastic collisions with the floor, but Susan disagrees with him. They set up an experiment to test Neil's statement. A ball (mass 250 g) is dropped from a fixed height of 2 m. The time taken from the moment it leaves Susan's hand until it touches the floor is timed by Neil with a stopwatch. They record the height reached after the bounce by taking photographs of the ball bouncing back to maximum height in front of a 2 m ruler. They repeat these measurements three times and record the following results for the time taken to reach the floor as 0,61s, 0,65s and 0,64s respectively, and for the corresponding maximum height of the bounce as 1,54 m, 1,60 m and 1,58 m respectively.
2m
1m
Ball bouncing back to maximum height
1.1.1 Draw up a table of the results of this experiment and calculate the average values of time taken and maximum height reached. Include these average values in the table. Make sure that your columns have appropriate headings and SI units. 1.1.2 What is the magnitude of the acceleration of the ball while it falls to the floor? Ignore the effects of air resistance. 1.1.3 Use the values
PHYSICAL SCIENCES: PAPER I Time: 3 hours PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY 1. This paper consists of: • a question paper of 17 pages • a data and formula booklet of 3 pages (i – iii) Please make sure that your question paper is complete. 2. 3. 4. 5. 6. Remove the pages of data and formulae from the middle of this question paper. Use the data and formulae whenever necessary. Read the questions carefully. In Question 1 answer 1.1, 1.2 and EITHER 1.3 OR 1.4. In Question 4 answer EITHER 4.1 OR 4.2. It is in your own interest to write legibly and to set your work out neatly. 150 marks
IEB Copyright © 2008
NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER I
Page 2 of 17
QUESTION 1
PLAY BALL
Start this question on a new page 1.1 Neil says that a bouncing ball will have inelastic collisions with the floor, but Susan disagrees with him. They set up an experiment to test Neil's statement. A ball (mass 250 g) is dropped from a fixed height of 2 m. The time taken from the moment it leaves Susan's hand until it touches the floor is timed by Neil with a stopwatch. They record the height reached after the bounce by taking photographs of the ball bouncing back to maximum height in front of a 2 m ruler. They repeat these measurements three times and record the following results for the time taken to reach the floor as 0,61s, 0,65s and 0,64s respectively, and for the corresponding maximum height of the bounce as 1,54 m, 1,60 m and 1,58 m respectively.
2m
1m
Ball bouncing back to maximum height
1.1.1 Draw up a table of the results of this experiment and calculate the average values of time taken and maximum height reached. Include these average values in the table. Make sure that your columns have appropriate headings and SI units. 1.1.2 What is the magnitude of the acceleration of the ball while it falls to the floor? Ignore the effects of air resistance. 1.1.3 Use the values