Which variables are constant in different types of projectile motion?

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SUMMARY

In projectile motion, the only constant variable across all types (Type 1: horizontal launch, Type 2: angled launch to the same height, Type 3: angled launch to a different height) is Vx, the horizontal component of velocity. This is due to the absence of acceleration in the x-direction. Other variables such as Dx (horizontal displacement), Dy (vertical displacement), and Vy (vertical component of velocity) vary based on launch height and gravitational effects. Understanding these distinctions is crucial for analyzing projectile motion accurately.

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  • Understanding of basic physics concepts, specifically projectile motion.
  • Familiarity with the definitions of displacement (D) and velocity (V).
  • Knowledge of the effects of gravity on vertical motion.
  • Ability to differentiate between horizontal and vertical components of motion.
NEXT STEPS
  • Study the equations of motion for projectile motion in physics.
  • Learn about the effects of launch angles on projectile trajectories.
  • Explore the concept of acceleration due to gravity and its impact on vertical motion.
  • Investigate the differences between two-dimensional and three-dimensional projectile motion.
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Students studying physics, educators teaching projectile motion concepts, and anyone interested in understanding the dynamics of motion in a gravitational field.

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Homework Statement



For type 1, 2, or 3 projectiles, which of the following are constant?

Dx, Dy, Vx, Vy

Homework Equations





The Attempt at a Solution




I figure that the only one that is constant in all situations would be Vx because there is no acceleration in the x direction.

Dx would change depending on the height of launch, so would dy, and Vy, would depend on height as well because of gravity. But am I interpreting 'constant' correctly. Vx is the only horizontal straight line in a graph vs time but others are straight just not horizontal.

Basically, what does constant mean in physics in the context of this question?
 
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What are type 1, 2 and 3 projectiles? What are the quantities you have listed? Presumably Vx and Vy are velocity in the x and y directions respectively. Are the D's distance?
 
Type 1- horizontal launch off cliff
Type 2 - angled launch landing at same height as launch
Type 2 - angled launch landing at different height as launch

D is displacement
And V is velocity and x and y are the horizontal and vertical components respectively.
 

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