Balanced and Unbalanced Forces

What force causes the negative acceleration at Section 4?

• Force of Gravity Increases the  Speed
• Force of Gravity Decreases the Speed
• Force of Friction Increase the speed
• Force of Wind resistance Increases the Speed

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

How will this object's motion change?

• It will not change.

• It will accelerate right.

• It will accelerate left.

• It will accelerate up.

What is the net force?

• 30 N left
• 25 N right
• 5 N left
• 55 N right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

On the Picture the balloon pushes the air right. What is the second force in this interaction pair?

• The air pulls the ball left
• Gravity pulls the balloon down
• The air pushes the balloon left.
• The air pulls the balloon right.

Tags

NGSS.MS-PS2-1

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the resultant force?

• 50N to the left.
• 350N to the left.
• 350N to the right.
• 50N to the right.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the net force?

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

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If these boys are pulling with the same amount of force in opposite directions, who will win?

• The boy in blue will win.

• Neither boy will win.

• The boy in red will win.

• The boys will fall down.

Which could be an example of an unbalanced force?

• A plate sitting on a dining table

• A ball at the top of a hill that is not moving

• A car traveling at a constant speed on a straight road.

• A baseball that has been thrown to home plate.

Which could be an example of a balanced force?

• An asteroid moving at a constant speed through space

• A car accelerating away from a stop sign

• A box of cereal (Honey Comb) falling from a counter

• A rocket taking off