METHOD AND RISK ASSESSMENT
Method:
1. Place the wooden chair on a levelled ground.
2. Extend the steel measuring tape to 50 cm (1/2 metre) and
3. Hold it vertically on the seat of the wooden chair, such that the readings on the steel measuring tape start at the bottom.
4. Ensure that the bottom of the steel measuring tape touch the seat of the wooden chair.
5. Hold the tennis ball at 200 cm above the seat of the wooden chair.
6. Release the tennis ball gently by opening the fingers and not moving the hand.
7. Observe the height of the first bounce of the tennis ball.
8. Record the results on the paper
9. Perform steps 4 to 7, 2 more times
10. Calculate the average of the three heights
10. Record the average height on the paper
11. Perform steps 4 to 7, 3 times, holding the tennis ball 65 cm above the seat of the wooden chair, before releasing it on the seat of the wooden chair.
12. Calculate the average of the three heights.
13. Record the average height on the paper.
14. Perform steps 4 to 7, 3 times, holding the tennis ball 80 cm above the seat of the wooden chair, before releasing it on the seat of the wooden chair.
15. Calculate the average of the three heights.
16. Record the average height on the paper.
17. Evaluate the results( make a judgement about aim; does the height of which the the tennis ball is released from affects the height of its first bounce?) , based on the three avergae heights obtained for the three different heights.
Risk Assessment:
1. Place the wooden chair on a levelled ground.
2. Extend the steel measuring tape to 50 cm (1/2 metre) and
3. Hold it vertically on the seat of the wooden chair, such that the readings on the steel measuring tape start at the bottom.
4. Ensure that the bottom of the steel measuring tape touch the seat of the wooden chair.
5. Hold the tennis ball at 200 cm above the seat of the wooden chair.
6. Release the tennis ball gently by opening the fingers and not moving the hand.
7. Observe the height of the first bounce of the tennis ball.
8. Record the results on the paper
9. Perform steps 4 to 7, 2 more times
10. Calculate the average of the three heights
10. Record the average height on the paper
11. Perform steps 4 to 7, 3 times, holding the tennis ball 65 cm above the seat of the wooden chair, before releasing it on the seat of the wooden chair.
12. Calculate the average of the three heights.
13. Record the average height on the paper.
14. Perform steps 4 to 7, 3 times, holding the tennis ball 80 cm above the seat of the wooden chair, before releasing it on the seat of the wooden chair.
15. Calculate the average of the three heights.
16. Record the average height on the paper.
17. Evaluate the results( make a judgement about aim; does the height of which the the tennis ball is released from affects the height of its first bounce?) , based on the three avergae heights obtained for the three different heights.
Risk Assessment: