8.6A Unbalanced Forces

Which of the following objects will experience an unbalanced force?

• A bike rider on a smooth and level road, pedaling at a constant rate.

• A train pulling on another train, each with the same amount of force.

• A chair sitting on the floor with balanced forces acting in opposite directions.

• A ball rolling across the floor with friction acting in the opposite direction.

Tags

NGSS.MS-PS2-2

You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

• 60 N right
• 10 N left
• 60 n right
• 50 N left

Tags

NGSS.MS-PS2-2

A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

• Balanced Forces, Constant Speed

• Balanced Forces, Acceleration

• Unbalanced Forces, Constant Speed

• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS2-2

What is the net force?

• 40 N left
• 0 N Balalnced
• 400 N right
• 40 N right

Tags

NGSS.MS-PS2-2

What is the net force?

• 400 N Up at an increasing speed

• 400 N Down at an increasing speed

• 400 N Down at a constant speed

• 800 N Down at a constant speed

Tags

NGSS.MS-PS2-2

Why does a book on a table not move?

• No forces are acting on the book
• Gravity is the only force acting on the book
• Forces of the table pushing up and gravity pulling down are balanced

Tags

NGSS.MS-PS2-4

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

Tags

NGSS.MS-PS2-2

(T or F?) A balanced force is only an object that is not moving. 

• True 
• False

Tags

NGSS.MS-PS2-2

Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?

• Balanced
• Unbalanced

Tags

NGSS.MS-PS2-2

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.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4