Horizontal velocity component stays constant in projectile motion.
This is a classic physics question where we analyze motion under gravity, ignoring air resistance.

Core Concept

Projectile motion splits into independent horizontal and vertical parts. Horizontally, no acceleration acts (unlike vertically, where gravity pulls down constantly at about 9.8 m/s²). So, the horizontal velocity vx=ucos⁡θv_x=u\cos \theta vx​=ucosθ remains unchanged from launch to landing.

Vertical velocity vy=usin⁡θ−gtv_y=u\sin \theta -gtvy​=usinθ−gt varies continuously, speeding up downward. Total speed and direction shift too, tracing a parabola.

Typical Options Analyzed

Imagine standard multiple-choice:

  • Horizontal component of velocity : Constant —no horizontal forces.
  • Vertical component of velocity : Changes due to gravity.
  • Velocity of projection : Initial value only; magnitude evolves.
  • All/none : Incorrect.

Quantity| Constant?| Reason 13
---|---|---
Horizontal velocity| Yes| Zero horizontal acceleration
Vertical velocity| No| Gravity accelerates it
Total speed| No| Components combine variably
Acceleration (vertical)| Yes| Gravity is steady (~g)

Real-World Story

Picture a basketball free throw: The ball's side-to-side speed holds steady while it arcs up and down. Pros like Stephen Curry exploit this for range. In 2026 physics classes or JEE/NEET prep (still trending on forums), students nail this by visualizing components.

TL;DR : Horizontal velocity component remains constant.

Information gathered from public forums or data available on the internet and portrayed here.