Apologia Physical Science Module 11 Force of Gravity

A student drops a ball and it begins to fall due to the force of gravity that the earth exerts on it. What is the equal and opposite force demanded by Newton's third law of motion?

• the ball exerts an equal and opposite force on the earth

• the air resistance on the ball

• 40 N

• the ball will bounce up after hitting the ground

Which is the weakest fundamental force in creation?

• Strong force

• Weak force

• Gravity

• Electromagnetic force

What is the force necessary to make an object move in a circle? It is directly proportional to the velocity of the object. (It points to the center of the circle)

• centripetal force

• strong force

• weak force

As asteroid that intersects with earth's orbit is called...

• a meteor

• a meterioid

• a meteorite

What do we call it when an asteroid hits the earth's surface?

• meteor

• meteoroid

• meteorite

What do we call an asteroid when it hits earth's atmosphere and we see a brilliant streak of light?

• meteor

• meteroroid

• meteorite

Which Universal Law of Gravitation says that all objects with mass are attracted to one another by gravity?

• first

• second

• third

Which Universal Law of Gravitation says the gravitational force between two masses is inversely proportional to the square of the distance between them?

• first

• second

• third

Which of the Universal Laws of Gravitation says the gravitational force between two masses is directly proportional to the mass of each object?

• first

• second

• third

Who is this?

• Gallileo

• Newton

• Einstein