Unbalanced Forces STAAR questions REDO

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

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

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

Tags

NGSS.MS-PS2-2

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

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

The forces acting an a toy car are shown.

In which direction will the race car move and with how much force?

• Right, 11 Newtons

• Left, 11 Newtons

• Right, 1 Newton

• Left, 1 Newton

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A student is trying to move an object by pushing it. When the student applies 20 Newtons of force to the object, it does not move. When the student applies 40 Newtons of force to the object, it moves. Which of the following identifies the greatest amount of force the object could be applying to the student?

• 20 Newtons

• 30 Newtons

• 40 Newtons

• 50 Newtons

Tags

NGSS.MS-PS2-1

What is the force acting in the opposite direction of an object in motion called?

• Friction Force

• Gravity Force

• Normal Force

• Net Force

Tags

NGSS.MS-PS2-1

Which of the following correctly describes a system with a net force of 0N?

• The system would be balanced, therefore the object would move

• The system would be balanced, therefore the object would not move

• The system would be unbalanced, therefore the object would move

• The system would be unbalanced, therefore the object would not move

Tags

NGSS.MS-PS2-2

• 40,000 N
• 100 N
• 100 m/s^2
• 10,000 kg

Tags

NGSS.MS-PS2-2