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
see other
a,c,d,e,f
acd
To determine which options apply, let's analyze each statement:
a) Experience a net downward force: This statement is generally true for most projectiles in the Earth's atmosphere. Gravity pulls the projectile downward, causing it to experience a net downward force.
b) Have a constant speed: This statement is not true for most projectiles. In projectile motion, the horizontal component of velocity remains constant, while the vertical component changes due to gravity. As a result, the overall speed (magnitude of velocity) varies throughout the motion.
c) Be accelerating: This statement is true in projectile motion. Although the speed may not be constant, the projectile's velocity is continuously changing due to the acceleration caused by gravity.
d) Be changing its velocity: This statement is true because, as mentioned in the previous point, the projectile's velocity is changing continuously due to acceleration.
e) Be moving downward: This statement is not always true for projectiles. Although most projectiles move in a parabolic path, they do not necessarily move only downward. The direction depends on the launch angle and the initial velocity of the projectile.
f) Have a horizontal motion in addition to a vertical motion: This statement is true for projectiles. As long as there is an initial non-vertical component of velocity, the projectile will have simultaneous horizontal and vertical motions.
Based on the analysis, the options that apply 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