Free Fall and Circular Motion

The state that exists when the only force acting on an object is gravity is called

• momentum

• acceleration

• inertia

• free fall

The acceleration due to gravity near the surface of Earth is equal to

• 9.8 m/s²

• 9.8 N

• 9.8 kg × m/s

• 9.8 m/s

The word centripetal means

• gravitational

• continuous

• free falling

• center seeking

Satellites in orbit around Earth travel in an almost circular path because Earth is

• massive

• curved

• free falling

• centripetal

The force that causes an object to move in a circle is called

• balanced

• centripetal force

• gravitational

• circularity

Any object that travels around another object in space is a(n)

• orbit

• centrifuge

• satellite

• alien dancer

An object traveling in a circle is accelerating because it is constantly changing

• gravity

• direction

• inertia

• clothes

What is the centripetal force that causes a satellite to move in a circle.

• Friction

• Gravity

• Acceleration

• Magnetism

Satellites in orbit around Earth continually fall toward

• the Moon

• Earth

• the Sun

• Mars

If you could turn off a centripetal force,

would cause the object to fly off in a straight line.

• acceleration

• inertia

• velocity

• fright