PS2

The net force is the sum of all forces acting on an object. The net force acting on the object below (including the direction) is:

    

                    

 

         

 

 

 

• 8 N right

• 8 N left

• 16 N right

• 16 N left

Tags

NGSS.MS-PS2-2

How do you determine net force when two forces act in the same direction?

• . Subtract the forces

• Multiply the forces

• Divide the forces

•   Add the forces

Tags

NGSS.MS-PS2-2

When an unbalanced force acts on an object at rest, the force

 

           

• changes the motion of the object

• is cancelled by another force.

• does not change the motion of the object.

• is equal to the weight of the object.

Tags

NGSS.MS-PS2-2

The tendency to resist a change in motion is a(n)

 

           

• unbalanced force

• inertia

• balanced force

• net force

The standard unit of force is a(n)

 

        

• newton

• gram

• ounce

• kilogram

Which of the following is an example of an object being acted upon by an unbalanced force:

• a book on a table

• a baseball thrown by a pitcher

• a parked car

• a train traveling in a straight line at a constant speed

Tags

NGSS.MS-PS2-2

When the acceleration of an object doubles, what happens to the amount of force produced?

 

           

• It is divided in half.

• It stays the same.

• It doubles.

• Acceleration has no effect on force.

Tags

NGSS.HS-PS2-1

What is the sum of all the forces acting on an object?

 

    

• Balanced force

• Net force

• Velocity

• Unbalanced force

Tags

NGSS.MS-PS2-2

Newton’s Third Law of Motion states that

 

  

          

• for every action, there is an equal and opposite reaction

• an object at rest will remain at rest and an object an motion will stay in motion unless acted upon by an unbalanced force

• force = mass X acceleration

Tags

NGSS.MS-PS2-1

Mr. Smith and his wife were trying to move their new chair. Mr. Smith pulls with a force of 45 N and is wife pushes with the force of 15 N in the same direction. What is the net force?

 

           

• 30 N

• 15 N

• 45 N

• 60 N

Tags

NGSS.MS-PS2-2