A child does 350 j of work while pulling a box from the ground up to his treehouse at a steady speed with a light rope the treehouse is 4.0 m above the ground what is the mass of the box

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.