Virtually no one acknowledged Newton's work during hislifetime.

  

True

   

False

What is the force of gravity (in Newtons) acting between theEarth and a 125-kg person standing on the surface of the Earth?

A planet in orbit about the Sun will move the fastest when it is...

  

farthest from the Sun

   

closest to the Sun

   

closest to the empty focus

   

at aphelion

The statement: \"Planets sweep out equal area in equal time.\" isalso known as ...

  

Kepler's Second Law

  

Newton's Law of Gravity

  

Kepler's First Law

  

Kepler's Third Law

What is the orbital period (in years) of a planet with asemimajor axis of 35 AU?

What is the force of gravity (in Newtons) acting between the Sunand a 4,500-kg rocket that is 0.75 AU from the Sun?

What is the orbital period (in years) of a planet with asemimajor axis of 15 AU?

Virtually no one acknowledged Galileo's work during hislifetime.

  

True

   

False

Newton is credited with which of the following? [Select all thatapply]

  

improving the telescope

   

single-handedly developing calculus

   

uncovering important properties of light

   

discovering principles of gravitational attraction

What is the semimajor axis (in AU) of a planet with an orbitalperiod of 14 years?

Virtually no one acknowledged Kepler's work during hislifetime.

  

True

   

False

Gravity between two objects is __________ proportional to theproduct of their masses and __________ proportional to the squareof the distance between them.

  

directly, indirectly

   

directly, directly

   

indirectly, indirectly

   

indirectly, directly