I believe it was called Feudalism :) I hope this helps!
Answer:
Velocity is defined as a vector measurement of the rate and direction of motion. Put simply, velocity is the speed at which something moves in one direction. The speed of a car traveling north on a major freeway and the speed a rocket launching into space can both be measured using velocity.
AND
Examples:
Revolution of Earth around the sun.
Revolution of moon around the earth.
Velocity of a satellite around the earth.
Velocity of a car while driving.
Velocity of a ball when hitted with a bat.
Velocity of water coming from a tap.
Velocity of the train .
Characteristic velocity or , or C-star is a measure of the combustion performance of a rocket engine independent of nozzle performance, and is used to compare different propellants and propulsion systems.. Formula = ˙ is the characteristic velocity (e.g. m/s, ft/s) is the chamber pressure (e.g. Pa, psi)
Answer:
False
Explanation:
Egypt:Friends and relatives tend to kiss on both cheeks while shaking hands. Greetings between men and women: A handshake may be acceptable in certain circumstances and the woman must extend her hand first. If she does not, a man should bow his head as a sign of acknowledgement.
Japan:In Japan, people greet each other by bowing. A bow can ranges from a small nod of the head to a deep bend at the waist. A deeper, longer bow indicates respect and conversely a small nod with the head is casual and informal.
Moon phases are caused by the motions of the Earth and moon as they relate to the sun.
