If we learn that F = G mM/d2 where the units are F:Newtons, m:kg, ...

[fox]

If we learn that F = G mM/d2 where the units are F:Newtons, m:kg, M:kg, and d:meters; what are the units of G?
 
  What will be an ideal response?

Question 2

Explain the process through which kinetic energy is conserved in an elastic collision.
 
  What will be an ideal response?

[Alyson.hiatt@yahoo.com]

Answer to Question 1

Newton-meter2 /kilogram2

Answer to Question 2

If the two objects are very hard and no heat or other form of energy is produced in the collision, then the kinetic energy of the two objects is the same after the collision as before. For the brief moment during which the two objects are in contact, some (or all( of the energy is stored momentarily in the form of elastic potential energy. But if we compare the total kinetic energy just before the collision with the total kinetic energy just after the collision, and they are found to be the same, then we say that the total kinetic energy is conserved.

[fox]

Excellent

[jomama]

Gracias!