Question

In projectile motion, the physical quantity that remains invariant throughout is

• A. vertical component of velocity
• B. horizontal component of velocity
• C. kinetic energy of the projectile
• D. potential energy of the projectile
• E. linear momentum of the projectile

Answer 1

The Correct Option is B

In projectile motion, the horizontal component of velocity remains constant throughout the flight because there is no acceleration acting in the horizontal direction (assuming air resistance is neglected). In contrast, the vertical component of velocity changes due to the acceleration due to gravity. Kinetic energy, potential energy, and linear momentum also change during projectile motion due to the variation in both components of velocity. Thus, the horizontal component of velocity remains invariant.

The correct option is (B) : horizontal component of velocity

Answer 2

In projectile motion, the horizontal component of velocity remains constant throughout the motion.  

This is because there are no external forces acting in the horizontal direction (assuming air resistance is negligible). Gravity only acts vertically, affecting the vertical component of velocity. 

Other quantities such as vertical velocity, kinetic energy, potential energy, and linear momentum change during the motion. 

Correct answer: horizontal component of velocity