Jim and david decide to arm wrestle to determine who is stronger. jim uses all of his strength, but david wins and is able to push jim's hand to the table. the forces acting on jim's hand during the match

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of