A spacecraft is in a circular orbit of radius r about the Earth. What is the minimum v (in km/s) the rocket engines must provide to allow the craft to escape from the Earth?

Use the data provided to calculate the gravitational potential energy of each cylinder mass. round your answers to the nearest tenth. 3 kg: kj 6 kg: kj 9 kg: kj

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.