Which of the following remains constant during the motion of a projectile fired from a planet? A. Momentum

B. Kinetic energy

C. Horizontal component of velocity

D. Vertical component of velocity

C. Horizontal component of velocity

Explanation:

Object in motion stays in motion,

nothing works against its motion in the horizontal direction, unlike in the vertical direction, gravity pulls object down.

Most commercial aircraft typically fly at around 460-575 mph, or 740-930 km/h, according to Flight Deck Friend. But private jet speed can vary depending on a variety of factors, such as the weight onboard and the weather conditions.