A projectile MUST____. List all that apply.

a) experience a net downward force
b) have a constant speed
c) be accelerating
d) be changing its velocity
e) be moving downward
f) have a horizontal motion in addition to a vertical motion

a,c,d are required by gravity.

b is never true, unless the projectile is sitting on a table or riding in a box in a train car
e is true only if dropped or shot downward
f is not true if shot straight up, or down. Hmm Actually, it does have horizontal motion in those two cases, the horizontal motion is zero. Zero in fact is a valid horizontal motion. So if you want to argue with your teacher, include f.

ur a poopy head, you want be to spell it out for ya. Youre A poopy head.

A projectile MUST:

c) be accelerating
d) be changing its velocity
f) have a horizontal motion in addition to a vertical motion

To determine the correct answer or answers, we need to understand the characteristics of a projectile.

A projectile is an object that is launched into the air with an initial velocity. It follows a curved path under the influence of gravity, without any external forces acting on it.

Let's analyze each option:

a) experience a net downward force: True. Gravity is the force responsible for pulling the projectile downward. As long as the projectile is in the air, it will experience a net downward force due to gravity.

b) have a constant speed: False. In general, a projectile does not have a constant speed. As the projectile moves upward, it slows down due to the opposing force of gravity. On the way down, it accelerates due to the downward pull of gravity.

c) be accelerating: True. Regardless of the direction, any object experiencing a change in velocity is considered to be accelerating. In the case of a projectile, it accelerates due to the downward force of gravity.

d) be changing its velocity: True. As mentioned earlier, the velocity of a projectile changes throughout its trajectory. It is initially launched with a certain velocity, but as it moves upward and then downward, its velocity continuously changes.

e) be moving downward: False. While it is true that a projectile eventually moves downward due to gravity, this is not always the case. Initially, when the projectile is launched, it moves upward until it reaches its highest point, after which it starts moving downward.

f) have a horizontal motion in addition to a vertical motion: True. A projectile exhibits both horizontal and vertical motion. The horizontal motion is constant and unaffected by gravity, assuming no air resistance or external forces. The vertical motion, on the other hand, is influenced by gravity and changes as the projectile moves upward and then downward.

In summary, the correct answers are:

a) experience a net downward force
c) be accelerating
d) be changing its velocity
f) have a horizontal motion in addition to a vertical motion