How is the speed of a planet , related to the position of the planet ?

1.	How is the speed of a planet , related to the position of the planet ?
Answer» <P> SOLUTION :Since angular momentum is a CONSTANT. `(v_(p))/(v_(A))=(r_(A))/(r_(A))`where, `v_(P)` - Speed at the perihelion `v_(A)` - Speed at the apchelion `r_(A)` - Distance of the planet at the apehelion and`r_(A)` - Distance of the planet at the perihelion.

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