Net Force Lesson

Multiple Choice

Calculate the net force of the object in the image shown.

• 20N
• 35N
• 5N
• 25N

Multiple Choice

What is the net force?

• 30 N Left

• 25 N Right

• 5 N Left

• 55 N Left

Multiple Choice

The definition of Force is:

• The pull of gravity.

• A push or pull on an object

• Something that moves an object

• the superpower that Darth Vader uses to subdue his enemies.

Multiple Choice

Mass is

• The amount of matter an object has

• How much something weighs

• Lower on the Moon

• A push or pull on an object

Multiple Choice

What is the net force?

• 25 N

• 10 N down

• 5 N up

• 10 N up

Multiple Choice

Omar and Katey reach for the same toy car at the same time. Omar pulls the toy away from Katey with a force of 10 N. Katey is pulling back with a force of 6 N. What is the net force?

• 4 N

• 6 N

• 10 N

• 16 N

Multiple Choice

In the context of balanced forces, which statement is true?

• They always cause an object to move

• They result in a net force of zero on the object

• They are only observed in outer space

• They increase the mass of the object

Multiple Choice

What is the net force acting on the car moving at a steady speed?

• 3000 N

• 0 N

• 6000 N

• 1500 N

Multiple Choice

Calculate the Net Force. 

• 40N, Left
• 40N, Right
• 0N, Balanced
• 75N, Right

Multiple Choice

What is the net force?

• 20 N Right

• 0 N

• 40 N Left

• 40 N Right

Categorize

Options (8)

No change in motion.

Forces are equal and opposite.

Change in motion.

Unequal forces.

Net force = 0N

Net force does not equal 0N

Constant motion.

Speeding up, Slowing down, turning.

Sort the following descriptions into the appropriate category.

Balanced Forces

Unbalanced Forces

Multiple Choice

Is it BALANCED? 

• Yes
• No

Multiple Choice

What is the net force?

• 15 N

• 5 N to the left

• 5 N to the right

• 15 N left

Multiple Choice

What is the net force?

• 65 N left
• 65 N right
• 35 N left
• 35 N right

Multiple Choice

The forces represented by the arrows in the diagrams are applied to the four objects that are at rest on a table. Which object is most likely to move to the right?

• Object W
• Object X
• Object Y
• Object Z

Multiple Choice

What is the net force?

• 5.5 N left
• 5.5 N right
• 2.5 N left
• 2.5 N right

Multiple Choice

If the car in the diagram rolls faster and faster as it moves down the ramp, you can be sure that

• there is no friction acting on the object.

• the forces acting on it are unbalanced.

• the net force on the car is 0 N.

• only gravity is acting on the car.

Multiple Choice

What is the net force?

• 3 N left
• 3 N right
• 7 N left
• 7 N right

Multiple Choice

The list includes six situations.

Which objects in the list experience an unbalanced force?

• The book, the ball, and the car

• The ball, the car, and the bird

• The can, the swing, and the bird

• The book, the ball, the can, and the swing

Multiple Choice

The unusual strength of a glue makes it able to hold a heavy object, or load, as shown in the diagram below. If the load exerts a strong downward force, the glue —

• destroys the force

• exerts a stronger downward force

• causes the load to accelerate upward

• exerts an upward force that is equal to the downward force

Multiple Choice

Calculate the Net Force. 

• 60N, Left 
• 40N, Right 
• 0N
• 60N, Right

Multiple Choice

What is the net force?

• 17 N Right
• 3 N Right
• 3 N Left
• 17 N Left

Dropdown

The forces acting on the cart are ​

Select answer

, causing the cart to move to the ​

Select answer

_​

Dropdown

The forces acting on the cart are ​

Select answer

, causing the cart to move to the ​ ​

Select answer

__​

Multiple Choice

An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.

• Unbalanced, because the plane is moving forward, not backwards
• Unbalanced, because the speed is constant and there is a change in direction
• Balanced, because the plane is not falling to a lower altitude
• Unbalanced, because the plane is in motion