greatest speed?      (c) The greatest velocity?      (d) The greatest momentum

A satellite of mass  243kg orbits the Earth at a constant speed in a circular orbit. The work done by the Earth on the satellite is a. negative. b. zero. c.directed towards the centre of the orbit. d. [None of the others.] e. positive. f.directed along a tangent to the orbit.

(a) At what height above Earth’s surface is the energy required to lift a satellite to that height equal to the kinetic energy required for the satellite to be in orbit at that height? (b) For greater heights, which is greater, the energy for lifting or the kinetic energy for orbiting?

A spacecraft is launched from Cape Canaveral to a 28.5° inclined circular orbit of altitude h = 400 km. We want to reach the ISS, which orbit has the same altitude but is inclined at 51.6°. Explain what solutions are possible for this operation, and determine (using calculations) which is the most economical.

If you are going to launch a 10,000 kg spacecraft from Earth, (a) how much kinetic energy it must possess in order to escape the gravitational pull? (b) If the mass is reduced by 5,000 kg, how much kinetic energy is required?

In a futuristic scenario, you are assigned the mission of making an enemy satellite that is in a circular orbit around Earth inoperative. You know you cannot destroy the satellite, as it is well protected against attack, but you can try to knock it out of its orbit so it will fly away and never return. What is the minimum amount of work ? applied to the satellite that is required to accomplish that? The satellite's mass and altitude are 975 kg and 259 km. Earth's mass and radius are 5.98×1024 kg and 6370 km.W = ? J

A satellite with mass 848 kg is in a circular orbit with an orbital speed of 9640 m>s around the earth. What is the new orbital speed after friction from the earth’s upper atmosphere has done -7.50 * 10^9 J of work on the satellite? Does the speed increase or decrease?

A 986-kg satellite orbits the Earth at a constant altitude of 101-km. (c) What is the change in the system's potential energy?

(a) What linear speed must an Earth satellite have to be in a circular orbit at an altitude of 144 km above Earth's surface? (b) What is the period of revolution? (a) Number Units (b) Number Units

Two Earth satellites, A and B, each of mass m, are to be launched into circular orbits about Earth's center. Satellite A is to orbit at an altitude of 5390 km. Satellite B is to orbit at an altitude of 22500 km. The radius of Earth REis 6370 km. (a) What is the ratio of the potential energy of satellite B to that of satellite A, in orbit? (b) What is the ratio of the kinetic energy of satellite B to that of satellite A, in orbit? (c) Which satellite (answer A or B) has the greater total energy if each has a mass of 11.7 kg? (d) By how much?