Laws of Motion Quiz

Kepler completed his Laws of Planetary Motion while studying which planet?

• Mercury

• Venus

• Earth

• Mars

Which of the following planets listed below has the LEAST elliptical orbit?

• Earth .017

• Mars .093

• Neptune .010

How do you calculate the eccentricity of an ellipse?

• Divide the distance between foci by the major axis

• Multiply the distance between the foci by the major axis

• Add the distance between the foci to the major axis

According to Kepler’s Law of Equal Areas the planets travel around the Sun

• At different speeds depending on their position in their orbit

• At the same speed no matter their orbital position

• At random speeds

How much force is needed to accelerate a 5 kg ball 2m/s?

• 2.5 N

• 10 N

• 7N

According to Kepler’s third law a planet that is farther from the Sun orbits

• The sun more slowly and a greater distance to travel

• Orbits the sun more quickly, but has a greater distance to travel

• Orbits the sun the same speed but has a greater distance to travel

If a 10 N force is exerted on a 1 kg ball what will the acceleration be?

• 10 m/s

• 1 m/s

• 0.1 m/s

Which planet has the MOST elliptical orbit?

• Venus .008

• Mercury .216

• Earth .017

What is the eccentricity of an ellipse that has 2.5 cm between the focus point and a 10 cm major axis?

• 0.25

• 25

• 0.025

• 2.5

An ellipse with a value of 1 would be a

• A perfect circle

• A straight line

• A half circle