Unit F, Ch. 4: Forces in Pairs

What does a wheel reduce that makes work easier?

• force

• lubricants

• lows of motion

• friction

Forces always occur in pairs made up of an action force and a ________.

• reaction force

• second force

• conservation force

• pushing force

Tags

NGSS.MS-PS2-1

What expresses the combined effect of an object;s mass and velocity?

• acceleration

• action force

• momentum

• meters per second

What law states that momentum can be transferred but can't be lost?

• Law of Action Forces

• Newton's Third Law of Motion

• Newton's Second Law of Motion

• Law of Conservation of Momentum

Tags

NGSS.HS-PS2-2

When a rocket is launched, the total momentum after the launch equals _______.

• 33.3 m/s

• zero

• the reaction force

• 100 newtons

Tags

NGSS.HS-PS2-2

What law states that for every action force there is an equal and opposite reaction force?

• Law of Action Forces

• Law of Conservation of Motion

• Newton's Third Law of Motion

• Newton's First Law of Motion

Tags

NGSS.MS-PS2-1

Which of the following is the formula for finding momentum?

• m = v x a

• p = m x v

• a = p x m

• f = m x a

Tags

NGSS.HS-PS2-2

What does Earth do when you push downward to make a leap into the air?

• It also pushes downward.

• It's inertia keep it from moving.

• It rises to meet your feet.

• It pushes back.

Tags

NGSS.MS-PS2-1

The wheel was probably invented by Native Americans in North America.

• true

• false

When a cue ball is struck with the end of a cue stick, no momentum is transferred.

• true

• false

Tags

NGSS.MS-PS2-1