Newton's First Law

An object in motion tends to stay in motion unless an ___ force acts on it.

• unbalanced
• balanced

Tags

NGSS.MS-PS2-2

The tendency of an object to resist a change in motion is...

• inertia
• kinetic energy
• vector
• net force

Because of inertia, a moving object will keep ________ unless acted on by an unbalanced force.

• at rest

• moving

• in one spot

• inertia

Because of inertia, a resting object will remain at ________.

• rest
• a constant speed
• school
• inertia 

What kind(s) of objects have inertia?

• all objects with mass
• only objects at rest
• only objects in motion
• only objects whose motion is being changed

Tags

NGSS.HS-PS2-1

An object following a straight-line path at a constant speed 

• has zero acceleration
• has no forces acting on it
• has a net force acting in the direction of motion
• none of these

Tags

NGSS.MS-PS2-2

Why is the net force 0 in the image?

• Because the elephants are the same size
• Because they are both pulling the same amount of force in opposite directions
• Because they are elephants
• Because they are pulling away from each other.

Tags

NGSS.MS-PS2-1

The ______of an object tends to make the object resist being set into motion.

• mass
• force
• motion
• unbalanced forces 

Tags

NGSS.MS-PS2-2

Without a force to stop or slow a coasting object, the object will coast forever in a ______ line. 

• blue
• red
• straight
• vertical 

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

_________ opposes the motion of one object moving past another. 

• friction 
• velocity
• unbalanced forces
• simple machines