Motion & Forces

What 2 factors determine the amount of force an object receives?

• speed & height

• size & distance

• mass & speed

Tags

NGSS.MS-PS2-2

If a car is moving fast toward a wall, the wall will....

• apply an equal and opposite force back on the car?

• allow the car to run through the wall

• open up and swallow the car

• do nothing

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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

• Acceleration

• Gravity

• Net force

• Inertia

Tags

NGSS.MS-PS2-2

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

• Net forces

• Frictional forces

• Balanced forces

• Gravitational forces

Newton's First Law of Motion states that an object at rest stays at rest unless a _____ acts on it.

• Balanced force

• Net force

• Weak force

• Strong force

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

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

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

• True

• False

Tags

NGSS.MS-PS2-2