Newton's Laws of Motion

What is a force defined as in physics?

• A force is defined as an interaction that causes an object to change its velocity, which includes starting, stopping, or changing direction.

• A force is defined as the energy stored in an object due to its position.

• A force is defined as the rate at which work is done on an object.

• A force is defined as the amount of matter in an object.

Who contributed to our scientific understanding of the laws of motion?

• Isaac Newton

• Albert Einstein

• Galileo Galilei

• Nikola Tesla

According to Newton's First Law of Motion, what happens to an object that is in motion?

• An object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

• An object in motion will eventually come to a stop on its own.

• An object in motion will change direction randomly.

• An object in motion will accelerate without any external force.

Newton's Second Law of Motion states that objects of greater mass require greater force to ________.

• accelerate

• decelerate

• remain stationary

• change shape

Newton's Third Law of Motion says that for every action, there is an equal and opposite ________.

• reaction

• force

• movement

• effect

What is a force?

• the direction of an object's state of motion

• something that changes an object's state of motion

• the strength of an object's state of motion

• none of the above

Which of the following did Newton NOT contribute to our scientific understanding of the world?

• theory of gravity

• calculus

• laws of motion

• theory of the solar system with the sun in the center

"An object that is in motion will stay in motion" is part of:

• Newton's First Law of motion

• Newton's Second Law of motion

• Newton's Third Law of motion

• Newton's Fourth Law of motion

That objects of greater mass require greater force to accelerate is:

• Newton's First Law of motion

• Newton's Second Law of motion

• Newton's Third Law of motion

• Newton's Fourth Law of motion

That for every action there is an equal and opposite reaction is:

• Newton's First Law of motion

• Newton's Second Law of motion

• Newton's Third Law of motion

• Newton's Fourth Law of motion