Question

what is newtons 2nd law of motion?
law of gravity
force= mass multiplied by acceleration
for every action there is a equal and opposite reaction.
an object at rest stays rest unless acted on unbalanced force.

Explanation:

Newton's second law of motion is defined as Force equals Mass multiplied by acceleration ($F = ma$). The other options are incorrect: "Law of gravity" is a different concept, "For every action there is a equal and opposite reaction" is Newton's third law, and "An object at rest stays rest unless acted on unbalanced force" is Newton's first law.

Answer:

Force = Mass multiplied by acceleration.