1. What component is the velocity of a ball at the very peak of the balls path if it is thrown into thr air at some angle?

a. entirely vertical
b. entirely horizontal
c. not enough information
d. both vertical and horizontal

2. What is the horizontal acceleration of a projectile?

a. 0 m / s2
b. 9.8 m / s2
c.-9.8 m / s2
d. 0 m / s

3. Which of the following statements is NOT true?
a. The horizontal acceleration is always zero
b. Vertical acceleration of a projectile is constant
c. Horizontal and vertical components of projectile are dependent on each other
d. Horizontal and vertical components of projectile are independent on each other.

4. What is the vertical acceleration of the ball after one second after a baseball is thrown horizontally?

a. 0
b. 1 m / s2
c. 9.8 m / s2
d. -9.8 m /s2

5. What do you expect about the horizontal velocity of a projectile?(neglecting air resistance)

a. The horizontal velocity is zero
b. The horizontal velocity is constant
c. The horizontal velocity varies with time
d. The horizontal velocity varies with mass

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