- #1

- 57

- 0

increases- decreases- (always zero)*<my answer in parenthases

2. In trajectory motion the intitial horizontal velocity is ------------ the final horizontal velocity

greater than- less than- (equal to)*

3. When an object it launched from the ground, the acceleration in the y direction is___.

zero- (constant)* increasing- decreasing-

7. If an object is launched at an angle of 90 degrees at a velocity Vo the velocity in the x -direction is _____

Vo- 0- cannot be determined from information given- (Vo sin0)-

8. Three identical balls are dropped from the same hight with differents speeds. which of the following is incorrect

same vertical distance

same horizontal distance

(same time to reach the ground)

9. When a projectile is launched horizontaly from a height the initial velocity in the y direction is------

zero constant ( zero and constant) neither

10. an airplane at constant horizontal velocity over level ground releases a package which falls to the ground as a projectile when the package hits the ground it is

in front of the place

behind the plane

(directly below the plane)

cannot know without knowing the planes height

thanks