During the motion of a projectile fired from the earth surface,

Home » Physics » Physics miscellaneous » Question

During the motion of a projectile fired from the earth surface, _______

1. its kinetic energy remains constant
2. its momentum remains constant
3. vertical component of its velocity remains constant
4. horizontal component of its velocity remains constant

Correct Option: C

The motion of a projectile is a two-dimensional motion—Horizontal motion and vertical motion—that take place independent of each other. The horizontal velocity of a projectile is constant (a never changing in value). The force of gravity continuously affects the vertical component, so the vertical motion is a uniformly accelerated motion.