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Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

• the feather

• the metal bolt

• They would hit the ground at the same time.

• They would be suspended in a vacuum.

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

• momentum

• acceleration

• inertia

• free fall

The more mass an object has, the faster it will fall.

• Aristotle - TRUE; Galileo - TRUE

• Aristotle - FALSE; Galileo - FALSE

• Aristotle - TRUE; Galileo - FALSE

• Aristotle - FALSE; Galileo - TRUE

What shape is Earth's orbit?

• circle

• ellipse

• square

• spiral

The law of universal gravitation is credited to whom?

• Einstein

• Galileo

• Cavendish

• Newton

Who of the following first described the shape of the earth's orbit?

• Aristotle

• Kepler

• Galileo

• Newton

Two factors effecting the magnitude of force of gravity between 2 objects are...

• weight and mass 
• distance and weight 
• mass and matter 
• mass and distance 

If a bowling ball and a feather were dropped at the same time, in a room with no air resistance (vacuum), which object will hit the ground first?

• Bowling Ball
• Feather
• Both would hit at the same time
• Neither one would hit the ground because air is what pushing things down.

Who is credited with discovering the Gravitational constant, even though he got it wrong at first for measuring edge to edge and not center to center?

• Galileo

• Kepler

• Newton

• Cavendish

The gravitational constant used in the Universal Gravitation Formula is:

• 6.63 x 10^-34

• 6.02 x 10^-23

• 6.67 x 10^-11

• 6.65 x 10^-29