Forces: Inertia and Gravity

Multiple Choice

Which of the following would have the greater gravitational force?

• elephant

• rocket

• human

• cat

Multiple Choice

Gravity is a force of attraction between two objects due to their...

• mass

• weight

• position

• height

Multiple Choice

The Law of Gravitation states that gravitational forces decreases as...

• distance increases

• distance decreases

• time increases

• time decreases

Multiple Choice

What is the tendency of an object to resist a change in its motion?

• gravity

• interia

• force

• space

Multiple Choice

Inertia depends on mass. The greater the mass of an object the _____ the inertia.

• greater

• smaller

• less

• change in

Multiple Choice

If an object has a large mass and the inertia is greater, what happens to the force?

• It is greater

• It is less

• It is equal

• It is nonexistent

Multiple Choice

What is Newton's first law?

• Objects stay at rest/motion unless acted upon by a force.

• Objects will not stay at rest/motion unless acted upon by a force.

• Greater motion greater inertia

• Greater mass smaller inertia

Multiple Choice

What is freefall motion?

• When the only force acting on an object is gravity.

• When more than one force is acting an object

• When the only force acting on an object is air resistance.

Multiple Choice

What type of friction is air resistance?

• fluid

• sliding

• static

• rolling

Multiple Choice

Why does it seem like a feather takes longer to fall than an acron?

• it is lighter

• It is smaller

• it has more air resistance acting on it

• they hit the ground at the same time.

Multiple Choice

True or false: All objects fall at the same rate?

• True

• False

Multiple Choice

What is projectile motion?

• Occurs anytime an object is thrown.

• Occurs when objects are dropped straight down.

• Occurs when objects are bounced.

• Occurs when an object swings in a circular motion.

Multiple Choice

What is satellite motion?

• When an object orbits another in space

• When an object is moving in a circle.

• When an object is moving vertically.

• When an object looks like a satellite.

Multiple Choice

Why does a thrown ball curve down while it falls to Earth?

• Projectile Motion

• Satellite Motion

• Freefall Motion

• Running Motion