Motion Forces

The statement "to every action there is an equal and opposite reaction" is _____.

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Law of Conservation of Momentum

Tags

NGSS.MS-PS2-1

According to Newton's Second Law of Motion, _____

• F = mv

• F = pv

• F = ma

• F = pa

A force is a push or pull that one body exerts on another body.

• True

• False

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

An object accelerates if it speeds up, slows down, or changes directions.

• True

• False

Tags

NGSS.MS-PS2-2

If Kim won a 300 meter race in 40 seconds, her average speed was _____.

• 15 m/s

• 25 m/s

• 7.5 m/s

• 8.5 m/s

Tags

NGSS.MS-PS3-1

_____ is the rate of change of speed and/or direction.

• Acceleration

• Gravity

• Net force

• Inertia

Forces that are equal in size and opposite in direction are _____.

• Net forces

• Frictional forces

• Balanced forces

• Gravitational forces

Tags

NGSS.MS-PS2-1

Which object has the greatest inertia?

• Bowling ball

• Ping-pong ball

• Toothpick

• Pencil

Tags

NGSS.MS-PS2-2

When an object moves in a circular path, it accelerates toward the center of the circle as a result of _____.

• Terminal velocity

• Momentum

• Centripetal force

• Friction

Momentum is expressed in units of _____.

• kg_*m

• kg_*m/s

• N

• m/s²

Tags

NGSS.HS-PS2-2