What is the net force?

• 0 N

• 250 N, right

• 250 N, left

• 1000 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Balanced or unbalanced?

• balanced

• unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which type of force keeps an object at rest (not moving)?

• balanced

• unbalanced

Which type of force causes an object to move?

• balanced

• unbalanced

A book is sitting still on your desk. What is the net force?

• 0 N

• 2 N

• 5 N

• 10 N

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

Mack runs up to a kickball and kicks it. The ball flies across the field. His foot created an ___________ force.

• unbalanced

• balanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A book is sitting on your desk. The desk exerts a _______ force on the book.

• normal

• applied

• balanced

• unbalanced

Every action has an equal and opposite reaction

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Tags

NGSS.MS-PS2-1

The force that holds all objects down

• gravity

• friction

• magnetism

• normal force

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Identify the ACTION force.

• The woman hitting the tennis ball

• The wall pushing back on the tennis ball (bouncing it back to her)

• The downward force of gravity pulling on the ball

• The air resistance the ball encounters

Tags

NGSS.MS-PS2-1