Question

the horizontal component of a projectiles velocity is independent of the vertical component of its velocity. the projectiles speed. the range of the projectile. question 7 a ball is thrown into the air at some angle. at the very top of the balls path, its velocity is entirely vertical. entirely horizontal both vertical and horizontal. there is not enough information given to determine. question 8 at the instant a ball is thrown horizontally with a large force, an identical ball is dropped from the same height. which ball hits the ground first? the thrown ball. the dropped ball. neither, they both hit the ground at the same time.

Explanation:

• For the first question, in projectile - motion, the horizontal and vertical components of velocity are independent of each other due to the nature of two - dimensional motion under the influence of gravity (which acts only vertically).
• For the second question, at the top of the projectile's path, the vertical component of velocity is zero, and only the horizontal component remains.
• For the third question, the vertical motion of the ball thrown horizontally and the ball dropped is the same (both have an initial vertical velocity of 0 and are under the influence of gravity only in the vertical direction), so they hit the ground at the same time.

Answer:

• First question: the vertical component of its velocity.
• Second question: entirely horizontal.
• Third question: Neither, they both hit the ground at the same time.