Understanding Forces

What is a force?

• A) A push or a pull

• B) A type of energy

• C) A form of matter

• D) A chemical reaction

Tags

NGSS.MS-PS2-1

Force is expressed in ______.

• Newtons (N)

• Joules (J)

• Watts (W)

• Pascals (Pa)

What is a force responsible for?

• Creating energy

• Putting all things in motion

• Stopping motion

• Changing temperature

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If one person applies a force of 25 N and another applies a force of 20 N, what is the total force applied?

• 45 N

• 40 N

• 50 N

• 30 N

Tags

NGSS.MS-PS2-2

Forces in opposite directions are subtracted. In a tug of war, if one team pulls with a force of 12 N and the other team pulls with a force of 10 N, what is the net force?

• 2 N

• 22 N

• 0 N

• 10 N

Tags

NGSS.MS-PS2-2

What does the net force tell you about the forces on an object?

• A) Whether the forces are strong or weak

• B) Whether the forces are balanced or unbalanced

• C) Whether the forces are moving or stationary.

Tags

NGSS.HS-PS2-1

Balanced forces have a net force of ______.

• zero

• one

• two

• three

What happens to the motion of an object when the forces are balanced?

• A) The object speeds up

• B) The object slows down

• C) There is no change in motion.

Tags

NGSS.MS-PS2-2

Why does the book sitting on the table not move?

• Because it is glued to the table.

• Because there is no net force acting on it.

• Because it is too heavy to move.

• Because the table is tilted.

Tags

NGSS.MS-PS2-2

What do unbalanced forces produce?

• No change in motion

• A change in motion

• A constant speed.

Tags

NGSS.MS-PS2-2