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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# Model Solutions

Use common sense, but try only to make statements about which you can be certain.

You might first attempt to determine which individual assumptions reduce distance and which individual assumptions increase distance.

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Challenge Level

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Use common sense, but try only to make statements about which you can be certain.

You might first attempt to determine which individual assumptions reduce distance and which individual assumptions increase distance.

A ball whooshes down a slide and hits another ball which flies off the slide horizontally as a projectile. How far does it go?

How fast would you have to throw a ball upwards so that it would never land?