Question

Which statement about one of Newton's laws of motion is incorrect? For every action there is an equal reaction perpendicular to the direction of the force. The total force on an object is calculated by multiplying its mass times its acceleration. An object in motion continues in motion unless acted upon by and outside force. a = f/m

Answer 1

Answer:

Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the direction of the force.

Answer 2

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

Explanation:

There are three laws of motion given by Issac Newton which describes relationship between forces acting in the system and motion of any object.

Newton's third law states:

"For every action there is an equal in magnitude and opposite in direction reaction"

• This reaction force is in the opposite direction of the applied force.

• Third law of motion is also known as action-reaction force. The force exerted on the body is the action force and the force that is exerted by the body in return is called reaction force.

• Examples are: walking, upthrust of a rocket, static friction while pushing an object.

• The total force on an object is calculated by multiplying its mass times its acceleration. This statement is true because Newton's second law describes force as mass times acceleration.

• An object in motion continues in motion unless acted upon by and outside force. This statement is also true as stated by Newton's first law of motion that body remains in its state unless a force acts on it.