What is newton's second law of motion? (2 points) every reaction is equal to the force applied. forces are balanced when they are equal and opposite. the smaller the mass of an object, the greater the acceleration of that object when a force is applied. the greater the force applied, the greater the acceleration. an object at rest or in motion will remain at rest or in motion unless acted upon by an unbalanced force.

Well, they're not quite the way Newton expressed it, but out of all this mess of statements, there are two that are correct AND come from Newton's 2nd Law of Motion:

-- The smaller the mass of an object, the greater the acceleration of that object when a force is applied.

-- The greater the force applied, the greater the acceleration.

For the other statements in the question:

-- Every reaction is equal to the force applied.  True; comes from Newton's 3rd law of motion.

-- Forces are balanced when they are equal and opposite.  True; kind of a definition, not from Newton's laws of motion.

-- An object at rest or in motion will remain at rest or in motion unless acted upon by an unbalanced force.  True; comes from Newton's 1st law of motion.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

a electromagnetic waves