TEST II: TRUE or FALSE. Write T if the statement is true and F if the statement is false.
11. A projectile is an object upon which the only force acting is gravity.
12. An object dropped from rest is a projectile.
13. An object that is thrown vertically upward is a projectile.
14. Horizontal forces are required to keep a projectile moving horizontally.
15. Gravity accelerates objects downward and is able to affect the horizontal motion of a projectile.
16. There is only a vertical force acting upon projectiles.
