Which of the following best describes newton's second law of motion? (more than one answer applies)

f=m • a

a swimmer turns and kicks off from the end of the pool.

a book will slide across the desk if you exert a force on it.

an object in motion will remain in motion in the same direction and at a constant speed unless another force acts on it.

law of inertia

shows the relationship between mass, force and acceleration.

for every action there is an equal and opposite reaction.

when a hammer strikes a nail, the nail exerts a force back on the hammer.

F=m • a

A swimmer turns and kicks off from the end of the pool.

A book will slide across the desk if you exert a force on it.

Explanation:

The first one, F = ma is a direct expression of the Newton's second law of motion. This is because the force exerted on an object changes its momentum like this:

where (acceleration is change in velocity with respect to time)

Thus, the equation will be in the form:

F = ma

The second scenario points to an acceleration produced as a result of the force on an object. This time the feet propel the motion hence,

The third scenario is the fact that the force produces acceleration on the book.