Initial & Final Velocity on X-Axis: Why Equal?

Thread starter Aspekt
Start date Nov 20, 2005
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Projectile

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In projectile motion along the X-axis, the initial and final velocity values are often equal due to the absence of horizontal forces acting on the projectile. The only force influencing the motion is Earth's gravity, which acts downward, resulting in vertical acceleration. Consequently, the horizontal components of acceleration remain zero, leading to constant horizontal velocity. This principle explains why initial and final velocities on the X-axis remain unchanged during projectile motion. Understanding this concept is crucial for analyzing motion in physics.

Nov 20, 2005

Aspekt

As far as motion on the X-Axis, why typically are the initial velocity and final velocity values the same?

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Nov 20, 2005

lightgrav

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because the Force that causes acceleration (in projectile motion)
is the pull of Earth's gravity applied to the projectile.
This Force is Downward (by definition!) so the acceleration is, too.
So the other two acceleration components are zero.

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