Name: 

A force is an action that can change an object’s mass. _________________________

The inertia of an object is determined by its weight. _________________________

The sum of all the forces acting on an object can be called the net force. _________________________

The law of inertia is a name sometimes used to refer to Newton’s second law. _________________________

As you stand upon the ground, you exert a force called weight on the ground. The force the ground exerts upon you is called the normal force. _________________________

The action that has the ability to change the motion of an object is:

The term that means all of the forces together is:

The property of matter that resists changes in motion is:

Of the following, the object with the most inertia is a(n):

The following are all examples of changing motion EXCEPT:

Newton’s law which might be called the law of inertia is Newton’s:

A baseball is hit by a batter. The force that determines how the ball moves is the:

An automobile weighing 16,000 newtons is parked at a shopping mall.The average normal force exerted on each of its four wheels by the parking lot surface is:

The scientific law that states that every action force causes a reaction force of equal size in the opposite direction is Newton’s ____________________ law.

The speed of a moving object with no force acting upon it _________________________ after some time.

Name three ways the motion of an object can be changed.
a.
b.
c.

A carpenter pounds a 0.005-kilogram nail into a board using a 1.000-kilogram hammer. If the hammer applies a force of 50 newtons on the hammer, what force does the nail apply on the hammer?

An airboat is moving through the Florida Everglades. Four forces act upon the boat as shown in the illustration below. Force F_A is 5500 newtons, Force F_B is 1,000 newtons and Force F_C is 6,000 newtons. Using the illustration and the information above, answer the following:



a. What is value of force F_D?
b. Is the speed of the airboat increasing, decreasing or constant?

Give three examples of action-reaction force pairs.
a.
b.
c.

Malik, a 140-kilogram lineman moving east at 7.0 meters per second runs head-on into Brandon, a 70-kilogram running back moving at 10.0 meters per second in the opposite direction, west. If Malik tackles and holds onto Brandon, in what direction do the two football players move?

While his mother is shopping for groceries, Luis is carrying Miguel, his 85-newton brother. He notices a scale for measuring body weight in the store and steps on. The scale exerts a normal force of 700 newtons on his feet. If Luis were not carrying his brother, what normal force would the scale exert on his feet?

Toby, a truck driver, claims that if he were able to drive his twelve ton truck on the moon, it would require less force to bring it to a stop than on Earth. Is Toby right or wrong? Use the words weight, mass and inertia to explain your answer.

Brianna starts a lawnmower moving across the yard by applying a force of 75 newtons on the handle of the mower. According to Newton’s third law, the handle pushes back on Brianna with 75 newtons of force. Why does the mower move if the forces are equal and opposite?