4400 Higher November 2005 Paper 3 Q10
10 Pat drops a ball onto a wooden floor.
The ball bounces to a height which is 26% less than the height from which it is dropped.
(a) Pat drops the ball from a height of 85 cm.
Calculate the height to which it first bounces. (3)
Calculate the height to which it first bounces. (3)
(b) Pat drops the ball from a different height.
It first bounces to a height of 48.1 cm.
Calculate the height from which he dropped it. (3)
It first bounces to a height of 48.1 cm.
Calculate the height from which he dropped it. (3)
| Scheme | Marks |
|---|---|
| 26/100 × 85 or 22.1 | M1 |
| 85 − “22.1” | M1 |
| 62.9 | A1 |
| (3) |
Notes
M1: (dep) or M2 for 74/100 × 85
| Scheme | Marks |
|---|---|
| 48.1 / 0.74 | B1 M1 |
| 65 | A1 |
| (3) | |
| (6 marks) |
Notes
B1: for 0.74 seen
M1: for 48.1 / 0.74
A1: cao