which statement is true?

a.) gravity is the force of attraction between two objects with mass and is dependent on the distance between these objects.

b.) gravity is the force that repels two objects that have opposite charges. it is dependent upon the charges of the objects.

c.) gravity is a force that keeps objects moving in space. the less the object weighs, the further out in space gravity will pull the object.

d.) gravity is the force of resistance to a change in position. the greater the distance between two objects, the greater this force will be.
answer

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero

Afaulty model rocket moves in the xy-plane (the positive y direction is vertically upward). the rocket's acceleration has components ax(t) = ? t2 and ay(t) = ? ? ? t, where ? = 2.50 m/s4 , ? = 9.00 m/s2 , and ? = 1.40 m/s3 . at t = 0 the rocket is at the origin and has velocity ~v0 = v0x ? i + v0y ? j with v0x = 1.00 m/s and v0y = 7.00 m/s. (a) calculate the velocity and position vectors as functions of time. (b) what is the maximum height reached by the rocket? (c) sketch the path of the rocket. (d) what is the horizontal displacement of the rocket when it returns to y = 0?