Using the formula h = v²/(2g), where g = 10 m/s², h = (20)²/(2*10) = 20 m.

Using v² = u² - 2gh, 0 = (20)² - 2*10*h, h = 20 m.

The change in gravitational potential energy when a mass m is lifted to a height h is given by ΔU = mgh.

The work done against gravity when lifting a mass m to a height h is given by W = mgh.

As the satellite moves to a higher orbit, its gravitational potential energy increases due to the increase in distance from the Earth's center.

The gravitational force decreases with the square of the distance. At 4R, the force is 1/(4^2) = 1/16 of the force at the surface.

Orbital speed v = √(GM/R). If R is tripled, v becomes √(GM/(3R)) = v/√3, which is reduced to one-third.

If the speed of a satellite is doubled, the orbital radius will decrease by a factor of four, as orbital speed is inversely proportional to the square root of the radius.

Increasing the speed of a satellite in a circular orbit will cause its orbit to become elliptical.

The gravitational force is inversely proportional to the square of the distance; halving the radius increases the force by a factor of four.

Increasing the speed of a satellite in a circular orbit will cause it to move into an elliptical orbit.

As the satellite moves to a higher orbit, its distance from the Earth increases, leading to an increase in gravitational potential energy.

The gravitational potential energy of a satellite in orbit is negative due to the attractive force of gravity.

The orbital speed of a satellite is given by v = sqrt(G * M / r), where M is the mass of the Earth.

The orbital speed of a satellite is given by v = sqrt(G * M / r), where M is the mass of the Earth.

The orbital speed can be calculated using the formula v = √(GM/r). For a height of 300 km, the speed is approximately 7.9 km/s.

A polar orbit allows the satellite to pass over the entire surface of the Earth as the planet rotates beneath it.

The gravitational potential becomes zero at infinity, as V approaches zero as r approaches infinity.

The gravitational forces exerted by both masses cancel each other out at the midpoint.

The gravitational potential is constant along an equipotential surface.

The gravitational potential energy is considered zero at infinity.

The gravitational potential is considered zero at infinity.

For a satellite in a circular orbit, the kinetic energy is less than the potential energy, as K.E. = -1/2 P.E.

Low Earth orbit satellites typically operate at altitudes ranging from about 200 km to 2000 km above the Earth's surface.

For a satellite in a stable orbit, the centripetal force required for circular motion equals the gravitational force acting on the satellite.

The gravitational field strength decreases with the square of the distance from the point mass.

Gravitational force is directly proportional to the product of the masses. Tripling one mass triples the force.

The gravitational potential decreases as you move away from a planet.

The gravitational potential energy decreases as the two masses move closer together.

The gravitational potential energy increases as the object is lifted to a height 'h' above the ground.