3.2 Gravity

Every object in the universe exerts a force on every other object.

• friction

• centripetal force

• gravity

• mass

Weight is measured in

• mass

• Newtons

• microwelds

• 9.8

Earth exerts a stronger gravitational force than the moon because the Earth has more

• mass

• centripetal force (gravity)

• population

• land to water ratio

The smaller the object, the ______________ the gravitational force.

• weaker

• greater

A force directed toward the center of an object moving in a circular motion.

• gravity

• mass

• friction

• centripetal force

If you throw a ball as hard as you can, it will follow a pathway that _______.

• is straight

• is curved downward

• increases acceleration

• resistant to atmospheric pressure

Which is not one of the four basic forces?

• momentum

• gravity

• electromagnetic force

• nuclear force

Weight and mass are the same thing.

• True

• False

The force of gravity can be calculated between any two objects if their masses and the distance between them are known.

• Newton's 1st Law

• Newton's 2nd Law

• Law of Gravitation

• Law of Terminal Velocity

A marble and a bowling ball are in free fall. Which will land first?

• marble

• bowling ball

• they both land at the same time