Q1a tick two
The balls move slowly.
The balls are far apart from each other.
The balls are different colours.
The balls move randomly.
Q2ai
Q2bii
the area of the footwear
Tom's weight on the footwear
the material of the footwear
the weight of the footwear
Q2b
Q3ai
Q3aii
Q4ai
Q4aii
Q4bi
Q4bii
Q5a
Q5b
Q5c
Q6
Q7
Q1b solid
Q1b
