Melanie and Brody want to find out whether wooden bats or metal bats allow baseballs to
travel farther.
Melanie asks five different people to hit
ten balls with each type of bat and she
measures the distance each ball travels.
Brody researches the physical properties
of the pine wood and the aluminum metal
and then estimates the possible distance
a ball could travel with a given force.

Which student conducted an experiment
and which student conducted an
investigation? Explain your answer.