How long does it take you to run one lap at a speed of `5` meters per second? How long does it take to run half a lap? A quarter of a lap?
How long does it take to sweep out an angle of `pitext[/]2?` An angle of `pitext[/]3?`
Find a formula to express the swept-out angle `theta` in terms of the elapsed time `t.`
Now find formulas for the `x`-coordinate and the
`y`-coordinate as functions of time.