Option 2
Upwards as positive:
Stone B:
(1)
(2)
(3)
Distance travelled by stone B: 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5)
(6)
Or
Downwards as positive:
Stone B:
(1)
(2)
(3)
Distance travelled by stone B: 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5)
(6)
Or
Option 3
Upwards as positive:
Stone B:
(1)
(2)
(3)
Distance travelled by stone B: 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5)
(6)
Or
Downwards as positive:
Stone B:
(1)
(2)
(3)
Distance travelled by stone B: 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5)
(6)
Or
Option 4
Upwards as positive:
Stone B:
(1)
Balloon's height after 5 s: 214,8 m
(2)
(3)
Distance travelled by stone B: 214,8 – 205,67 = 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5 + 6)
Or
Downwards as positive:
Stone B:
(1)
Balloon's height after 5 s: 214,8 m
(2)
(3)
Distance travelled by stone B: 214,8 – 205,67 = 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5 + 6)
Or
Option 5
Upwards as positive:
Stone B:
(1)
(2)
(3)
Distance travelled by stone B: 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5 + 6)
Or
Downwards as positive:
Stone B:
(1)
(2)
(3)
Distance travelled by stone B: 9,13 m
Hot-air balloon:
(4)
Distance travelled by hot-air balloon: 5,03m
Distance between hot-air balloon and
stone B:
(5 + 6)
Or
Option 6
Upwards as positive:
Using relative velocities:
(1)
(2 + 3 + 4 + 5)
Distance between hot-air balloon and
stone B: 14,16m (6)
Or
Downwards as positive:
Using relative velocities:
(1)
(2 + 3 + 4 + 5)
(6)
Distance between hot-air balloon and
stone B: 14,16m
Or
Option 7
Upwards as positive:
(1)
(2 + 3)
Distance travelled by stone B: 9,13 m
Height of stone B from the ground = 200 + 14,8 – 9,13 = 205,63 m
Height of balloon from the ground = 200 + (6,7)(2,96) = 219,83 m (4)
Distance between B and the balloon = 219,83 – 205,63 = 14,16 m (5 + 6)
Or
Downwards as positive:
(1)
(2 + 3)
Distance travelled by stone B: 9,13 m
Height of stone B from the ground = 200 + 14,8 – 9,13 = 205,63 m
Height of balloon from the ground = 200 + (6,7)(2,96) = 219,83 m (4)
Distance between B and the balloon = 219,83 – 205,63 = 14,16 m (5 + 6)