What is a baseline for an experimental investigation?

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?