Balanced and Unbalanced Forces

What is a PUSH or PULL of an object?

• Motion
• Force
• Friction
• Gravity

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

What type of force is acting upon the boys in the image? Choose 2 answers.

• Unbalanced forces

• Balanced forces

• Gravity

• Magnetic

Which force produces a change in velocity or cause acceleration?

• unbalanced force

• balanced force

• gravitational force

• frictional force

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

What happens when two forces act in the same direction?

• They cancel each other out.

• The stronger force moves the object.

• Their forces are added.

• Their sum divided by the two is the total force.

An object at rest (motionless) will remain at rest unless acted upon by an unbalanced force. True or false?

• true

• false

What is the net force on the block? (click on the words to view the picture)

• 5 Newtons up
• 5 Newtons down
• 15 Newtons up
• 15 Newtons down

Tags

CCSS.7.EE.B.3

Which of the following statements is true? 

• Balanced forces cause a change in motion. 
• Unbalanced forces cause a change in motion. 
• Forces do not effect the change in motion. 

Tags

NGSS.3-PS2-1

How many hydrogen atoms are in a molecule of brazilianite?

• 1

• 2

• 3

• 4

The car is traveling at a constant velocity of 85 kph north for one hour. The forces acting on the car are the engine force of 500 N to the right, and friction/drag of 500 N to the left. What is the the net force? Is this balanced?

• 1000 N Right; No it is not balanced.

• 500 N Left; No it is not balanced.

• 0 N Moving at a constant velocity; Yes it is balanced.

• 0 N Not moving at all; Yes it is balanced.