11. What motion state that needs an external force for it to move? C. Natural Motion A. Body motion D. Violent Motion B. Daily Motion 12. Who pointed out the concept of vertical motion that the velocity of a body is inversely proportional to the time it covers to travel a certain height? C. Galileo A. Aristotle D. Plato B. Copernicus 13. Who emphasized that if two objects of different weights are dropped from a high point, both will hit the ground at the same time.? A. Aristotle C. Galileo D. Plato B. Copernicus 14. Who stated that the mass of an object is proportional to its resistance to move and that force is not necessary to keep an object in motion? A. Aristotle C. Galileo D. Plato B. Copernicus 15. Who claims and stated that the motion of a body is not due to its composition. A. Aristotle C. Galileo D. Plato B. Copernicus 16. What is a vector measurement of the rate and direction of motion? A. Acceleration C. Force B. Inertia D. Velocity 17. What is strength or energy as an attribute of physical action or movement? A. Acceleration C. Force B. Inertia D. Velocity 18. What is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity? A. Body motion B. Daily Motion C. Projectile Motion D. Violent Motion 19. Who is the Greek philosopher and polymath during the classical period in Ancient Greece? A. Aristotle C. Galileo B. Copernicus D. Plato 20. Who is an Italian scientist who formulated the basic law of falling bodies, which he verified by careful measurements? A. Aristotle C. Galileo B. Copernicus D. Plato