Two vectors in Cartesian coordinates have components A = (2, 2, 1) and B = (4, 2, 5). Part (a) What is the length of the vector A? Part (b) What is the length of the vector B? Part (c) What is the angle, in degrees, between A and B?

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

The force will determine the acceleration.

In physics the desire of an object to keep doing what it is doing is termed?