Unbalanced/balanced forces and free body diagrams

A laptop sitting on a desk has balanced forces acting on it

• true

• false

Forces that are equal in magnitude (size) and opposite in direction are

• contact

• non-contact

• balanced

• unbalanced

Select the correct options

Kicking a ball is an example of a

• balanced force

• unbalanced force

• contact force

• non-contact force

Tags

NGSS.3-PS2-1

Both of the people in this image pull with a force of 50 newtons. They are pulling in opposite directions.

What is the resultant force?

• 0 Newtons

• 10 Newtons

• 50 Newtons

• 100 Newtons

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If the people pull with a force of 50 N each, which direction would the cart move?

• right

• left

• up

• stay still

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If the people pull with a force of 50 N each, what would the resultant force be?

• 75 N

• 100 N

• 0 N

• 50 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Forces can come in different sizes.

The scientific word for the size of a force is

• size

• largness

• big

• magnitude

The resultant force in the image is 100 N to the left.

If the blue person pulls with a force of 150 N, what force does the red person apply?

• 100 N

• 50 N

• 0 N

• 150 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Forces that are opposite in direction can cancel each other out. The left over force is called

• left over force

• gravity force

• friction force

• resultant force

Select the correct options

An object with unbalanced forces acting on it may

• change shape

• change direction

• speed up

• slow down

Tags

NGSS.MS-PS2-2