Bruen's Practice Quiz 3

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

All objects have inertia, whether they are moving or not.

• True
• False

Objects with greater _________ also have greater inertia.

• speed
• mass
• temperature
• friction

Friction and gravity are both examples of a force.

• True
• False

To change the motion of an object, inertia must be overcome by a __________ acting on the object.

• temperature
• speed
• force
• velocity

 If the mass of two objects increased and distance stayed the same then the gravitational force would 

• decrease
• stay the same
• increase

What would happen to Earth if the sun no longer had a gravitational pull on Earth?

• Earth would fall into the sun
• Earth would stop moving
• Earth would continue moving in a straight line away from the Sun
• Earth would keep orbiting around the sun

When riding your bike you brake suddenly, your body keeps going forward because of

• inertia
• gravity
• friction
• speed

During a magic trick, a magician pulls the tablecloth out from under a plate, the tablecloth comes off the table, but the plate remains on the table because it has

• gravity
• friction
• equilibrium
• inertia

What two factors keep planets in orbit around the sun

• mass and distance
• gravity and inertia
• friction and inertia
• mass and inertia