Question

which statement about one of newtons laws of motion is not correct?
o a = f/m
o the total force on an object is calculated by multiplying its mass times its acceleration.
o an object in motion continues in motion unless acted upon by and outside force.
o for every action there is an equal reaction perpendicular to the direction of the force.

Explanation:

Newton's third - law states that for every action, there is an equal and opposite reaction along the same line of action, not perpendicular. The first option is Newton's second - law ($a = f/m$ or $F=ma$ where $F$ is the total force, $m$ is mass and $a$ is acceleration), the third option is Newton's first - law.

Answer:

D. For every action there is an equal reaction perpendicular to the direction of the force.