The Tortoise and the Hare Science. I will give brainliest to whoever submits an answer. Make it right

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

What is the measure of a change in an objects velocity?

Element with 5protons and 3neutrons