drag each item to the correct location, so thaT each contribution to the theory of universal gravitation is matched with the scientist responsible for it.

Question

johannes kepler - robert hooke - isaac newton
a. first proposed the idea that a force of attraction applied to all objects in space
b. described the motion of planets around the sun as elliptical
d. used mathematics to prove that gravity increases with decreasing distance between objects

Answer 1

Here are the correct matches for each contribution to the theory of universal gravitation with the corresponding scientist:

• Johannes Kepler:
  b. described the motion of planets around the sun as elliptical

• Robert Hooke:
  a. first proposed the idea that a force of attraction applied to all objects in space

• Isaac Newton:
  d. used mathematics to prove that gravity increases with decreasing distance between objects