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A shot-putter puts her 4kg shot at some fixed angle and a known, fixed speed; it flies through the air and lands.
The motion is modelled several times according to each of the following assumptions:
Does the relative importance of these modelling assumptions change for striking a golf ball or hitting a table tennis ball?
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?