Orbital Speed and Its Relationship with Orbital Radius and Period

The video tutorial explains the relationship between orbital speed, radius, and path, using examples of the Moon, Mars, the International Space Station, and Venus. It covers how to calculate these quantities using specific equations, emphasizing the importance of units and significant figures. The tutorial provides step-by-step calculations for Mars' orbital speed, the ISS's orbital radius, and Venus' orbital period, illustrating the application of these concepts in real-world scenarios.

What is the average orbital speed of the Moon as it orbits the Earth?

• 0.5 kilometers per second

• 1.022 kilometers per second

• 2.5 kilometers per second

• 3.0 kilometers per second

What happens to a satellite if its orbital speed is too low?

• It will travel into space.

• It will fall back to Earth.

• It will move to a higher orbit.

• It will maintain its orbit.

Which of the following is NOT a component of the orbital speed formula?

• Orbital radius

• Time period

• Mass of the object

• 2 * π

In what units is the orbital speed of Mars calculated in the example?

• Kilometers per hour

• Meters per second

• Kilometers per second

• Miles per hour

What is the mean orbital speed of Mars to three significant figures?

• 86,900 kilometers per hour

• 86,847 kilometers per hour

• 87,000 kilometers per hour

• 86,800 kilometers per hour

What is the average orbital speed of the International Space Station?

• 8.5 kilometers per second

• 7.66 kilometers per second

• 6.5 kilometers per second

• 5.5 kilometers per second

How far above the Earth's surface does the International Space Station orbit?

• 359 kilometers

• 500 kilometers

• 6730 kilometers

• 6371 kilometers

What is the orbital period of Venus in seconds?

• 19,500,000 seconds

• 20,000,000 seconds

• 18,500,000 seconds

• 19,200,000 seconds

How many Earth days does it take for Venus to orbit the Sun?

• 222 days

• 200 days

• 300 days

• 250 days

What is the radius of the Earth used in the calculation for the ISS?

• 6730 kilometers

• 6371 kilometers

• 6000 kilometers

• 7000 kilometers