First law of motion

A force is a ________________________ that acts on an object.

• push

• pull

• push or pull

A force that opposes, or pushes back against, an object moving past another object

• gravity

• friction

• inertia

• mass

An object's tendency to resist (not) change its state of motion.

• gravity

• force

• inertia

• friction

Objects with more mass or heavier have LESS inertia.

• True
• False

Tags

NGSS.MS-PS2-2

The tendency of an object to resist change in motion.

• Force
• Motion
• Friction
• Inertia

Lighter objects have LESSER inertia than heavier objects.

• True
• False

Tags

NGSS.MS-PS2-2

____ is a force that occurs when an object rubs against another object.

• Motion
• Friction
• Velocity
• Speed

Friction can make a moving object slow down or stop.

• True
• False

Tags

NGSS.MS-PS2-2

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

According to Newton's first law, an object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

• slowing motion in a straight line
• accelerating motion in a straight line
• constant motion in a straight line
• constant motion in an unpredictable direction