Question

1. galileos experiments > describe galileos inclined plane experiment. (draw a sketch) > what did galileo discover about motion? > what part of his idea was still incorrect?

Explanation:

Galileo rolled balls down inclined planes. He measured time and distance. He discovered that objects in motion tend to stay in motion (a precursor to Newton's first - law). His incorrect idea was that he thought uniform motion required a force in the horizontal direction, not realizing inertia. A sketch would show an inclined plane, a ball at the top, and markings for distance and time measurements.

Answer:

• Description: Galileo set up smooth inclined planes and rolled balls down them. He used water - clocks to measure the time it took for the balls to travel different distances.
• Discovery about motion: He found that the distance traveled by a ball rolling down an inclined plane is proportional to the square of the time elapsed, and that objects in motion will continue in motion in the absence of a net external force (a basic concept of inertia).
• Incorrect part: He believed that a constant horizontal force was needed to maintain uniform horizontal motion, not understanding inertia fully as it was later formalized by Newton.