I think it is d if not then im sorry
PHysical properties are properties that do not involve changes in the molecular level. In this case, malleability and magnetism are physical.
Chemical properties involve changes to the substance at the molecular level or change its identity. In this case, reacting with oxygen and nonflammability is a chemical property.
Answer:
its false
Explanation:
because if an leaf floats down from a tree it is not considered an object for a free-fall
Answer:
the world won't move with out kinetic energy
Explanation:
We are not heavy enough to move the ground. Gravity is much stronger than our tiny jump
Use the formula,

to answer. We need the Mass, which is weight divided by acceleration. So, let's solve for F (force):

Plug in known values:

Solve:

Then, since we need mass, assuming we are on Earth, and there are no neutron stars, or anything like that close by, we can divide the weight by acceleration of gravity (9.8 m/s^2) to get the mass:

Simplify: